Q: Is 398,397 a Prime Number?
A: No, 398,397 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 398397 can be evenly divided by 1 3 41 79 123 237 1,681 3,239 5,043 9,717 132,799 and 398,397, with no remainder.
Since 398,397 cannot be divided by just 1 and 398,397, it is not a prime number.