A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8049690 can be evenly divided by 1 2 3 5 6 9 10 11 15 18 22 30 33 45 47 55 66 90 94 99 110 141 165 173 198 235 282 330 346 423 470 495 517 519 705 846 865 990 1,034 1,038 1,410 1,551 1,557 1,730 1,903 2,115 2,585 2,595 3,102 3,114 3,806 4,230 4,653 5,170 5,190 5,709 7,755 7,785 8,131 9,306 9,515 11,418 15,510 15,570 16,262 17,127 19,030 23,265 24,393 28,545 34,254 40,655 46,530 48,786 57,090 73,179 81,310 85,635 89,441 121,965 146,358 171,270 178,882 243,930 268,323 365,895 447,205 536,646 731,790 804,969 894,410 1,341,615 1,609,938 2,683,230 4,024,845 and 8,049,690, with no remainder.
Since 8,049,690 cannot be divided by just 1 and 8,049,690, it is not a prime number.