# Is 9 a composite number?

##### 1 Answer

Mar 7, 2018

9 is a composite number as number **3** is a factor of 9 other than 1 & 9.

#### Explanation:

A whole number that can be divided exactly by numbers other than 1 or itself. Example: 9 can be divided exactly by 3 (as well as 1 and 9), so 9 is a composite number.

But 7 cannot be divided exactly (except by 1 and 7), so is NOT a composite number (it is a prime number).