A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4011336 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 49 54 56 63 72 84 98 108 126 147 168 189 196 216 252 294 378 379 392 441 504 588 756 758 882 1,137 1,176 1,323 1,512 1,516 1,764 2,274 2,646 2,653 3,032 3,411 3,528 4,548 5,292 5,306 6,822 7,959 9,096 10,233 10,584 10,612 13,644 15,918 18,571 20,466 21,224 23,877 27,288 31,836 37,142 40,932 47,754 55,713 63,672 71,631 74,284 81,864 95,508 111,426 143,262 148,568 167,139 191,016 222,852 286,524 334,278 445,704 501,417 573,048 668,556 1,002,834 1,337,112 2,005,668 and 4,011,336, with no remainder.
Since 4,011,336 cannot be divided by just 1 and 4,011,336, it is not a prime number.