989256972 has 24 divisors (see below), whose sum is σ = 2518108992. Its totient is φ = 299774800.

The previous prime is 989256971. The next prime is 989256977. The reversal of 989256972 is 279652989.

It is not an unprimeable number, because it can be changed into a prime (989256971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3747054 + ... + 3747317.

It is an arithmetic number, because the mean of its divisors is an integer number (104921208).

Almost surely, 2^989256972 is an apocalyptic number.

It is an amenable number.

989256972 is an abundant number, since it is smaller than the sum of its proper divisors (1528852020).

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

989256972 is a wasteful number, since it uses less digits than its factorization.

989256972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7494389 (or 7494387 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 57.

The square root of 989256972 is about 31452.4557387814. The cubic root of 989256972 is about 996.4060899504.

The spelling of 989256972 in words is "nine hundred eighty-nine million, two hundred fifty-six thousand, nine hundred seventy-two".