8999559904 has 48 divisors (see below), whose sum is σ = 18467205120. Its totient is φ = 4312298880.

The previous prime is 8999559889. The next prime is 8999559929. The reversal of 8999559904 is 4099559998.

It is a self number, because there is not a number n which added to its sum of digits gives 8999559904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58137 + ... + 146215.

It is an arithmetic number, because the mean of its divisors is an integer number (384733440).

Almost surely, 2^8999559904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8999559904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9233602560).

8999559904 is an abundant number, since it is smaller than the sum of its proper divisors (9467645216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8999559904 is a wasteful number, since it uses less digits than its factorization.

8999559904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88223 (or 88215 counting only the distinct ones).

The product of its (nonzero) digits is 47239200, while the sum is 67.

The square root of 8999559904 is about 94866.0102671131. The cubic root of 8999559904 is about 2080.0499174411.

The spelling of 8999559904 in words is "eight billion, nine hundred ninety-nine million, five hundred fifty-nine thousand, nine hundred four".