9 is a composite number because it has more than two factors which are: 1, 3 and 9
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9 is a composite number.
It is a composite.
A prime number is not divisible by any numbers except 1 and itself. A composite number is divisible by other numbers. 9 is divisible by 3, so it is a composite number.
Any whole number that has a whole number divisor other than itself and 1 is composite. So 9 is composite since it is 3 times 3, as well as 9 times 1.
9 is the product of 3 * 3, or 3 squared.