Is 90 a Prime Number or Composite Number [Why & Why not Detailed Guide]

Last Updated: August 26, 2024

Is 90 a Prime Number or Composite Number [Why & Why not Detailed Guide]

Is 90 a Prime Number or Composite Number

Is 90 a Prime Number?

No – 90 is not a Prime Number.

Why No: 90 is not a prime number because it does not meet the prime criteria of having exactly two distinct positive divisors: 1 and itself. Check if any number is prime or not

Is 90 a Prime Number

Is 90 a Composite Number?

Yes – 90 is a Composite Number.

Why Yes: 90 is a composite number because it has more than two distinct positive divisors. It is divisible by 1, 2, 3, 5, 9, 10, 18, 30, 45, and itself (90).

Is 90 a Composite Number

Problem Statements

Property Answer
Is 90 a prime number? No
Is 90 a composite number? Yes
Is 90 a perfect square? No
Factors of 90 1, 2, 3, 5, 9, 10, 18, 30, 45, 90
Multiples of 90 90, 180, 270, 360, 450, 540, 630, 720, 810, 900
Cube Root of 90 4.481
Square of 90 8100
Square Root of 90 9.487
Is 90 a Perfect Cube? No
Is 90 an Irrational number No
Is 90 a Rational number Yes
Is 90 a Real number Yes
Is 90 an Integer Yes
Is 90 a Natural number Yes
Is 90 a Whole number Yes
Is 90 an Even or odd number No (90 is an even number)
Is 90 an Ordinal number Yes
Is 90 a Complex number Yes (as all real numbers are also complex numbers)

What are the factors of 90?

The factors of 90 are 1, 2, 3, 5, 9, 10, 18, 30, 45, and 90. This variety of factors confirms that 90 is a composite number. Unlike a prime number, which is divisible only by 1 and itself, 90’s wide range of divisibility showcases its composite nature.

What Kind of Number is 90?

90 is categorized as a composite number because it has more than two distinct positive divisors: 1, 2, 3, 5, 9, 10, 18, 30, 45, and itself.

  • 90 is an even number, distinguishing it in various numerical contexts.
  • As a composite number, 90’s unique properties and wide range of factors make it a subject of interest in mathematical discussions.
  • It is a natural number and a positive integer, reflecting its place in the realm of whole numbers.
  • 90’s status as a rational number further categorizes it within the spectrum of real numbers, which are also considered complex numbers by definition.

Nearest Prime Number to 90

The nearest prime numbers to 90 are 89 and 97. 89 is the closest prime number less than 90, and 97 is the closest prime number greater than 90

AI Generator

Text prompt

Add Tone

10 Examples of Public speaking

20 Examples of Gas lighting

Practice Test

What type of number is 90?

Prime number

Composite number

Neither

Both

of 10

What is the smallest prime factor of 90?

2

3

5

7

of 10

What is the sum of the factors of 90?

198

250

300

420

of 10

Which of the following correctly describes 90?

It is a prime number

It is a composite number

It is a square number

It is a perfect cube

of 10

 If 90 is a composite number, which of the following is true?

It has only two distinct factors.

It has more than two distinct factors

It is a prime number

It is not divisible by any number other than 1 and itself

of 10

What is the quotient when 90 is divided by its smallest prime factor?

30

45

18

15

of 10

Which factor of 90 is also a prime number?

1

5

9

18

of 10

What is the largest factor of 90 that is less than 20?

18

15

12

10

of 10

Which of the following numbers is a factor of 90?

8

12

14

20

of 10

Which statement is true about the number 90?

 It is a perfect square.

It is a perfect cube.

 It is a composite number.

It is a prime number.

of 10

school Ready to Test Your Knowledge?

close

Before you leave, take our quick quiz to enhance your learning!

assessment Assess Your Mastery
emoji_events Boost Your Confidence
speed Instant Results
memory Enhance Retention
event_available Prepare for Exams
repeat Reinforce Learning
👉 Start the Quiz Now