Q: Is 402,397 a Prime Number?
A: No, 402,397 is 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 402397 can be evenly divided by 1 349 1,153 and 402,397, with no remainder.
Since 402,397 cannot be divided by just 1 and 402,397, it is not a prime number.