Q: Is 855,387 a Prime Number?
A: No, 855,387 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 855387 can be evenly divided by 1 3 9 13 27 39 117 351 2,437 7,311 21,933 31,681 65,799 95,043 285,129 and 855,387, with no remainder.
Since 855,387 cannot be divided by just 1 and 855,387, it is not a prime number.