989309992 has 32 divisors (see below), whose sum is σ = 2072952000. Its totient is φ = 438716800.

The previous prime is 989309977. The next prime is 989310011. The reversal of 989309992 is 299903989.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133492 + ... + 140707.

It is an arithmetic number, because the mean of its divisors is an integer number (64779750).

Almost surely, 2^989309992 is an apocalyptic number.

It is an amenable number.

989309992 is an abundant number, since it is smaller than the sum of its proper divisors (1083642008).

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

989309992 is a wasteful number, since it uses less digits than its factorization.

989309992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274257 (or 274253 counting only the distinct ones).

The product of its (nonzero) digits is 2834352, while the sum is 58.

The square root of 989309992 is about 31453.2985869527. The cubic root of 989309992 is about 996.4238906866.

The spelling of 989309992 in words is "nine hundred eighty-nine million, three hundred nine thousand, nine hundred ninety-two".