It is a sphenic number, since it is the product of 3 distinct primes.
It is a Duffinian number.
It is a plaindrome in base 10.
It is a zygodrome in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 888888999.
It is a congruent number.
Almost surely, 2888888999 is an apocalyptic number.
888888999 is a wasteful number, since it uses less digits than its factorization.
888888999 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8008049.
The square root of 888888999 is about 29814.2415466166. The cubic root of 888888999 is about 961.4997532402.
The spelling of 888888999 in words is "eight hundred eighty-eight million, eight hundred eighty-eight thousand, nine hundred ninety-nine".