Q: Is 397,904 a Prime Number?
A: No, 397,904 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 397904 can be evenly divided by 1 2 4 8 13 16 26 52 104 208 1,913 3,826 7,652 15,304 24,869 30,608 49,738 99,476 198,952 and 397,904, with no remainder.
Since 397,904 cannot be divided by just 1 and 397,904, it is not a prime number.