The number 459,000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 17 18 20 24 25 27 30 34 36 40 45 50 51 54 60 68 72 75 85 90 100 102 108 120 125 135 136 150 153 170 180 200 204 216 225 250 255 270 300 306 340 360 375 408 425 450 459 500 510 540 600 612 675 680 750 765 850 900 918 1,000 1,020 1,080 1,125 1,224 1,275 1,350 1,500 1,530 1,700 1,800 1,836 2,040 2,125 2,250 2,295 2,550 2,700 3,000 3,060 3,375 3,400 3,672 3,825 4,250 4,500 4,590 5,100 5,400 6,120 6,375 6,750 7,650 8,500 9,000 9,180 10,200 11,475 12,750 13,500 15,300 17,000 18,360 19,125 22,950 25,500 27,000 30,600 38,250 45,900 51,000 57,375 76,500 91,800 114,750 153,000 229,500 and 459,000, with no remainder.
Since 459,000 cannot be divided by just 1 and 459,000, it is a composite number.