Q: Is 397,959 a Prime Number?
A: No, 397,959 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 397959 can be evenly divided by 1 3 109 327 1,217 3,651 132,653 and 397,959, with no remainder.
Since 397,959 cannot be divided by just 1 and 397,959, it is not a prime number.