977120989 has 12 divisors (see below), whose sum is σ = 1060668000. Its totient is φ = 899739984.

The previous prime is 977120981. The next prime is 977121011. The reversal of 977120989 is 989021779.

It is not a de Polignac number, because 977120989 - 2³ = 977120981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977120981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63912 + ... + 77710.

It is an arithmetic number, because the mean of its divisors is an integer number (88389000).

Almost surely, 2^977120989 is an apocalyptic number.

It is an amenable number.

977120989 is a deficient number, since it is larger than the sum of its proper divisors (83547011).

977120989 is a wasteful number, since it uses less digits than its factorization.

977120989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14244 (or 14231 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 977120989 is about 31258.9345467820. The cubic root of 977120989 is about 992.3147512565.

The spelling of 977120989 in words is "nine hundred seventy-seven million, one hundred twenty thousand, nine hundred eighty-nine".