Q: Is 1,388,439 a Prime Number?
A: No, 1,388,439 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 1388439 can be evenly divided by 1 3 9 13 39 117 11,867 35,601 106,803 154,271 462,813 and 1,388,439, with no remainder.
Since 1,388,439 cannot be divided by just 1 and 1,388,439, it is not a prime number.