Q: Is 489,920 a Prime Number?
A: No, 489,920 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 489920 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 160 320 1,531 3,062 6,124 7,655 12,248 15,310 24,496 30,620 48,992 61,240 97,984 122,480 244,960 and 489,920, with no remainder.
Since 489,920 cannot be divided by just 1 and 489,920, it is not a prime number.