Q: Is 86,400 a Prime Number?
A: No, 86,400 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 86400 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 64 72 75 80 90 96 100 108 120 128 135 144 150 160 180 192 200 216 225 240 270 288 300 320 360 384 400 432 450 480 540 576 600 640 675 720 800 864 900 960 1,080 1,152 1,200 1,350 1,440 1,600 1,728 1,800 1,920 2,160 2,400 2,700 2,880 3,200 3,456 3,600 4,320 4,800 5,400 5,760 7,200 8,640 9,600 10,800 14,400 17,280 21,600 28,800 43,200 and 86,400, with no remainder.
Since 86,400 cannot be divided by just 1 and 86,400, it is not a prime number.