A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8074440 can be evenly divided by 1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 30 33 36 40 44 45 55 60 66 72 88 90 99 110 120 132 165 180 198 220 264 330 360 396 440 495 660 792 990 1,320 1,980 2,039 3,960 4,078 6,117 8,156 10,195 12,234 16,312 18,351 20,390 22,429 24,468 30,585 36,702 40,780 44,858 48,936 61,170 67,287 73,404 81,560 89,716 91,755 112,145 122,340 134,574 146,808 179,432 183,510 201,861 224,290 244,680 269,148 336,435 367,020 403,722 448,580 538,296 672,870 734,040 807,444 897,160 1,009,305 1,345,740 1,614,888 2,018,610 2,691,480 4,037,220 and 8,074,440, with no remainder.
Since 8,074,440 cannot be divided by just 1 and 8,074,440, it is not a prime number.