A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 9798360 can be evenly divided by 1 2 3 4 5 6 8 10 11 12 13 15 20 22 24 26 30 33 39 40 44 52 55 60 65 66 78 88 104 110 120 130 132 143 156 165 195 220 260 264 286 312 330 390 429 440 520 571 572 660 715 780 858 1,142 1,144 1,320 1,430 1,560 1,713 1,716 2,145 2,284 2,855 2,860 3,426 3,432 4,290 4,568 5,710 5,720 6,281 6,852 7,423 8,565 8,580 11,420 12,562 13,704 14,846 17,130 17,160 18,843 22,269 22,840 25,124 29,692 31,405 34,260 37,115 37,686 44,538 50,248 59,384 62,810 68,520 74,230 75,372 81,653 89,076 94,215 111,345 125,620 148,460 150,744 163,306 178,152 188,430 222,690 244,959 251,240 296,920 326,612 376,860 408,265 445,380 489,918 653,224 753,720 816,530 890,760 979,836 1,224,795 1,633,060 1,959,672 2,449,590 3,266,120 4,899,180 and 9,798,360, with no remainder.
Since 9,798,360 cannot be divided by just 1 and 9,798,360, it is not a prime number.