A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8836938 can be evenly divided by 1 2 3 6 9 11 18 19 22 27 29 33 38 54 57 58 66 81 87 99 114 162 171 174 198 209 243 261 297 319 342 418 486 513 522 551 594 627 638 729 783 891 957 1,026 1,102 1,254 1,458 1,539 1,566 1,653 1,782 1,881 1,914 2,349 2,673 2,871 3,078 3,306 3,762 4,617 4,698 4,959 5,346 5,643 5,742 6,061 7,047 8,019 8,613 9,234 9,918 11,286 12,122 13,851 14,094 14,877 16,038 16,929 17,226 18,183 21,141 25,839 27,702 29,754 33,858 36,366 42,282 44,631 50,787 51,678 54,549 77,517 89,262 101,574 109,098 133,893 152,361 155,034 163,647 232,551 267,786 304,722 327,294 401,679 465,102 490,941 803,358 981,882 1,472,823 2,945,646 4,418,469 and 8,836,938, with no remainder.
Since 8,836,938 cannot be divided by just 1 and 8,836,938, it is not a prime number.