Q: Is 400,609 a Prime Number?

A: No, 400,609 is not a prime number.

Why is 400,609 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 400609 can be evenly divided by 1 11 79 461 869 5,071 36,419 and 400,609, with no remainder.

Since 400,609 cannot be divided by just 1 and 400,609, it is not a prime number.

Number	400,607	400,608	400,610	400,611
Prime?	yes	no	no	no

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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