A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8593452 can be evenly divided by 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 81 84 108 126 162 189 243 252 324 378 421 486 567 729 756 842 972 1,134 1,263 1,458 1,684 1,701 2,268 2,526 2,916 2,947 3,402 3,789 5,052 5,103 5,894 6,804 7,578 8,841 10,206 11,367 11,788 15,156 17,682 20,412 22,734 26,523 34,101 35,364 45,468 53,046 68,202 79,569 102,303 106,092 136,404 159,138 204,606 238,707 306,909 318,276 409,212 477,414 613,818 716,121 954,828 1,227,636 1,432,242 2,148,363 2,864,484 4,296,726 and 8,593,452, with no remainder.
Since 8,593,452 cannot be divided by just 1 and 8,593,452, it is not a prime number.