Q: Is 987,399 a Prime Number?
A: No, 987,399 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 987399 can be evenly divided by 1 3 7 9 21 49 63 147 441 2,239 6,717 15,673 20,151 47,019 109,711 141,057 329,133 and 987,399, with no remainder.
Since 987,399 cannot be divided by just 1 and 987,399, it is not a prime number.