Q: Is 405 a Composite Number?

 A: Yes, 405 is a composite number.

Why is 405 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 405 can be evenly divided by 1 3 5 9 15 27 45 81 135 and 405, with no remainder.

Since 405 cannot be divided by just 1 and 405, it is a composite number.


More Examples

Number 403404406407
Composite? yesyesyesyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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