Q: Is 400,664 a Prime Number?
A: No, 400,664 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 400664 can be evenly divided by 1 2 4 8 11 22 29 44 58 88 116 157 232 314 319 628 638 1,256 1,276 1,727 2,552 3,454 4,553 6,908 9,106 13,816 18,212 36,424 50,083 100,166 200,332 and 400,664, with no remainder.
Since 400,664 cannot be divided by just 1 and 400,664, it is not a prime number.