Q: Is 1,388,907 a Prime Number?
A: No, 1,388,907 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 1388907 can be evenly divided by 1 3 9 13 27 39 81 117 351 1,053 1,319 3,957 11,871 17,147 35,613 51,441 106,839 154,323 462,969 and 1,388,907, with no remainder.
Since 1,388,907 cannot be divided by just 1 and 1,388,907, it is not a prime number.