Q: Is 438,399 a Prime Number?
A: No, 438,399 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 438399 can be evenly divided by 1 3 9 13 27 39 117 351 1,249 3,747 11,241 16,237 33,723 48,711 146,133 and 438,399, with no remainder.
Since 438,399 cannot be divided by just 1 and 438,399, it is not a prime number.