represent infinity in Japanese mythology 8,108,731 = repunit prime in base 14 8,388,607 = second composite Mersenne number with a prime exponent 8,388,608 = 223 8,389,137 = Leyland number 8,399,329 = Markov number 8,436,379 = Wedderburn-Etherington number 8,503,056 = 29162 = 544 8,675,309 = A hit song for Tommy Tutone (also a twin prime with 8,675,311) 8,675,311 = Twin prime with 8,675,309 8,888,888 = repdigit 8,946,176 = self-descriptive number in base 8 9,000,000 to 9,999,999 9,150,625 = 30252 = 554 9,227,465 = Fibonacci number, Markov number 9,369,319 = Newman–Shanks–Williams prime 9,647,009 = Markov number 9,653,449 = square Stella octangula number 9,581,014 = n such that n | (3n + 5) 9,663,500 = Initial number of first century xx00 to xx99 that possesses an identical prime pattern to any century with four or fewer digits: its prime pattern of {9663503, 9663523, 9663527, 9663539, 9663553, 9663581, 9663587} is identical to {5903, 5923, 5927, 5939, 5953, 5981, 5987} 9,694,845 = Catalan number 9,699,690 = eighth primorial 9,765,625 = 31252 = 255 = 510 9,800,817 = equal to the sum of the seventh powers of its digits 9,834,496 = 31362 = 564 9,865,625 = Leyland number 9,926,315 = equal to the sum of the seventh powers of its digits 9,938,375 = 2153, the largest 7-digit cube 9,997,156 = largest triangular number with 7 digits and the 4,471st triangular number 9,998,244 = 31622, the largest 7-digit square 9,999,991 = Largest 7-digit prime number 9,999,999 = repdigit See also Huh (god), depictions of whom were also used in hieroglyphs to represent one million Megagon Millionaire Names of large numbers Orders of magnitude (numbers) to help compare dimensionless numbers between 1,000,000 and 10,000,000 (106 and 107) . References 1000000 Large numbers