989870886 has 12 divisors (see below), whose sum is σ = 2144720292. Its totient is φ = 329956956.

The previous prime is 989870863. The next prime is 989870887. The reversal of 989870886 is 688078989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989870887) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 27496396 + ... + 27496431.

It is an arithmetic number, because the mean of its divisors is an integer number (178726691).

Almost surely, 2^989870886 is an apocalyptic number.

989870886 is an abundant number, since it is smaller than the sum of its proper divisors (1154849406).

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

989870886 is a wasteful number, since it uses less digits than its factorization.

989870886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54992835 (or 54992832 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 63.

The square root of 989870886 is about 31462.2136220578. The cubic root of 989870886 is about 996.6121641965.

The spelling of 989870886 in words is "nine hundred eighty-nine million, eight hundred seventy thousand, eight hundred eighty-six".