Q: Is 400,065 a Prime Number?
A: No, 400,065 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 400065 can be evenly divided by 1 3 5 15 149 179 447 537 745 895 2,235 2,685 26,671 80,013 133,355 and 400,065, with no remainder.
Since 400,065 cannot be divided by just 1 and 400,065, it is not a prime number.