Q: Is 509,390 a Prime Number?
A: No, 509,390 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 509390 can be evenly divided by 1 2 5 7 10 14 19 35 38 70 95 133 190 266 383 665 766 1,330 1,915 2,681 3,830 5,362 7,277 13,405 14,554 26,810 36,385 50,939 72,770 101,878 254,695 and 509,390, with no remainder.
Since 509,390 cannot be divided by just 1 and 509,390, it is not a prime number.