Q: Is 1,390,389 a Prime Number?
A: No, 1,390,389 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 1390389 can be evenly divided by 1 3 7 11 13 21 33 39 77 91 143 231 273 429 463 1,001 1,389 3,003 3,241 5,093 6,019 9,723 15,279 18,057 35,651 42,133 66,209 106,953 126,399 198,627 463,463 and 1,390,389, with no remainder.
Since 1,390,389 cannot be divided by just 1 and 1,390,389, it is not a prime number.