Q: Is 1,438,388 a Prime Number?
A: No, 1,438,388 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 1438388 can be evenly divided by 1 2 4 7 14 28 47 94 188 329 658 1,093 1,316 2,186 4,372 7,651 15,302 30,604 51,371 102,742 205,484 359,597 719,194 and 1,438,388, with no remainder.
Since 1,438,388 cannot be divided by just 1 and 1,438,388, it is not a prime number.