Q: Is 387,990 a Prime Number?
A: No, 387,990 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 387990 can be evenly divided by 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 479 810 958 1,437 2,395 2,874 4,311 4,790 7,185 8,622 12,933 14,370 21,555 25,866 38,799 43,110 64,665 77,598 129,330 193,995 and 387,990, with no remainder.
Since 387,990 cannot be divided by just 1 and 387,990, it is not a prime number.