989484990 has 32 divisors (see below), whose sum is σ = 2557439136. Its totient is φ = 243565440.

The previous prime is 989484989. The next prime is 989485129. The reversal of 989484990 is 99484989.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1268181 + ... + 1268960.

It is an arithmetic number, because the mean of its divisors is an integer number (79919973).

Almost surely, 2^989484990 is an apocalyptic number.

989484990 is an abundant number, since it is smaller than the sum of its proper divisors (1567954146).

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

989484990 is a wasteful number, since it uses less digits than its factorization.

989484990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537164.

The product of its (nonzero) digits is 6718464, while the sum is 60.

The square root of 989484990 is about 31456.0803343328. The cubic root of 989484990 is about 996.4826393461.

The spelling of 989484990 in words is "nine hundred eighty-nine million, four hundred eighty-four thousand, nine hundred ninety".