989957132 has 12 divisors (see below), whose sum is σ = 1732649520. Its totient is φ = 494914416.

The previous prime is 989957123. The next prime is 989957159. The reversal of 989957132 is 231759989.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42098 + ... + 61254.

It is an arithmetic number, because the mean of its divisors is an integer number (144387460).

Almost surely, 2^989957132 is an apocalyptic number.

It is an amenable number.

989957132 is a deficient number, since it is larger than the sum of its proper divisors (742692388).

989957132 is a wasteful number, since it uses less digits than its factorization.

989957132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32080 (or 32078 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The square root of 989957132 is about 31463.5842204921. The cubic root of 989957132 is about 996.6411078084.

The spelling of 989957132 in words is "nine hundred eighty-nine million, nine hundred fifty-seven thousand, one hundred thirty-two".