977077491 has 16 divisors (see below), whose sum is σ = 1405694976. Its totient is φ = 600116256.

The previous prime is 977077477. The next prime is 977077547. The reversal of 977077491 is 194770779.

It is not a de Polignac number, because 977077491 - 2⁵ = 977077459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (977073491) 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, 3555 + ... + 44348.

It is an arithmetic number, because the mean of its divisors is an integer number (87855936).

Almost surely, 2^977077491 is an apocalyptic number.

977077491 is a deficient number, since it is larger than the sum of its proper divisors (428617485).

977077491 is a wasteful number, since it uses less digits than its factorization.

977077491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48442.

The product of its (nonzero) digits is 777924, while the sum is 51.

The square root of 977077491 is about 31258.2387699627. The cubic root of 977077491 is about 992.3000262470.

The spelling of 977077491 in words is "nine hundred seventy-seven million, seventy-seven thousand, four hundred ninety-one".