989857320 has 64 divisors (see below), whose sum is σ = 2972963520. Its totient is φ = 263660544.

The previous prime is 989857313. The next prime is 989857327. The reversal of 989857320 is 23758989.

It is an interprime number because it is at equal distance from previous prime (989857313) and next prime (989857327).

It is not an unprimeable number, because it can be changed into a prime (989857327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113019 + ... + 121461.

It is an arithmetic number, because the mean of its divisors is an integer number (46452555).

Almost surely, 2^989857320 is an apocalyptic number.

It is an amenable number.

989857320 is an abundant number, since it is smaller than the sum of its proper divisors (1983106200).

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

989857320 is a wasteful number, since it uses less digits than its factorization.

989857320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9434 (or 9430 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 989857320 is about 31461.9980293687. The cubic root of 989857320 is about 996.6076113797.

The spelling of 989857320 in words is "nine hundred eighty-nine million, eight hundred fifty-seven thousand, three hundred twenty".