A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3393324 can be evenly divided by 1 2 3 4 6 9 11 12 18 19 22 33 36 38 41 44 57 66 76 82 99 114 121 123 132 164 171 198 209 228 242 246 342 363 369 396 418 451 484 492 627 684 726 738 779 836 902 1,089 1,254 1,353 1,452 1,476 1,558 1,804 1,881 2,178 2,299 2,337 2,508 2,706 3,116 3,762 4,059 4,356 4,598 4,674 4,961 5,412 6,897 7,011 7,524 8,118 8,569 9,196 9,348 9,922 13,794 14,022 14,883 16,236 17,138 19,844 20,691 25,707 27,588 28,044 29,766 34,276 41,382 44,649 51,414 59,532 77,121 82,764 89,298 94,259 102,828 154,242 178,596 188,518 282,777 308,484 377,036 565,554 848,331 1,131,108 1,696,662 and 3,393,324, with no remainder.
Since 3,393,324 cannot be divided by just 1 and 3,393,324, it is not a prime number.