Q: Is 397,378 a Prime Number?
A: No, 397,378 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 397378 can be evenly divided by 1 2 198,689 and 397,378, with no remainder.
Since 397,378 cannot be divided by just 1 and 397,378, it is not a prime number.