A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4470444 can be evenly divided by 1 2 3 4 6 9 11 12 18 22 27 33 36 44 53 54 66 71 99 106 108 132 142 159 198 212 213 284 297 318 396 426 477 583 594 636 639 781 852 954 1,166 1,188 1,278 1,431 1,562 1,749 1,908 1,917 2,332 2,343 2,556 2,862 3,124 3,498 3,763 3,834 4,686 5,247 5,724 6,996 7,029 7,526 7,668 9,372 10,494 11,289 14,058 15,052 15,741 20,988 21,087 22,578 28,116 31,482 33,867 41,393 42,174 45,156 62,964 67,734 82,786 84,348 101,601 124,179 135,468 165,572 203,202 248,358 372,537 406,404 496,716 745,074 1,117,611 1,490,148 2,235,222 and 4,470,444, with no remainder.
Since 4,470,444 cannot be divided by just 1 and 4,470,444, it is not a prime number.