Q: Is 398,424 a Prime Number?
A: No, 398,424 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 398424 can be evenly divided by 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 1,277 2,554 3,831 5,108 7,662 10,216 15,324 16,601 30,648 33,202 49,803 66,404 99,606 132,808 199,212 and 398,424, with no remainder.
Since 398,424 cannot be divided by just 1 and 398,424, it is not a prime number.