Q: Is 209,440 a Prime Number?
A: No, 209,440 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 209440 can be evenly divided by 1 2 4 5 7 8 10 11 14 16 17 20 22 28 32 34 35 40 44 55 56 68 70 77 80 85 88 110 112 119 136 140 154 160 170 176 187 220 224 238 272 280 308 340 352 374 385 440 476 544 560 595 616 680 748 770 880 935 952 1,120 1,190 1,232 1,309 1,360 1,496 1,540 1,760 1,870 1,904 2,380 2,464 2,618 2,720 2,992 3,080 3,740 3,808 4,760 5,236 5,984 6,160 6,545 7,480 9,520 10,472 12,320 13,090 14,960 19,040 20,944 26,180 29,920 41,888 52,360 104,720 and 209,440, with no remainder.
Since 209,440 cannot be divided by just 1 and 209,440, it is not a prime number.