989888904 has 128 divisors (see below), whose sum is σ = 3020544000. Its totient is φ = 298976832.

The previous prime is 989888857. The next prime is 989888909. The reversal of 989888904 is 409888989.

It is not an unprimeable number, because it can be changed into a prime (989888909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89149 + ... + 99635.

It is an arithmetic number, because the mean of its divisors is an integer number (23598000).

Almost surely, 2^989888904 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 989888904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1510272000).

989888904 is an abundant number, since it is smaller than the sum of its proper divisors (2030655096).

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

989888904 is a wasteful number, since it uses less digits than its factorization.

989888904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10544 (or 10534 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 63.

The square root of 989888904 is about 31462.4999642431. The cubic root of 989888904 is about 996.6182110622.

The spelling of 989888904 in words is "nine hundred eighty-nine million, eight hundred eighty-eight thousand, nine hundred four".