977139464 has 32 divisors (see below), whose sum is σ = 2217041280. Its totient is φ = 394139904.

The previous prime is 977139431. The next prime is 977139497. The reversal of 977139464 is 464931779.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (977139431) and next prime (977139497).

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, 512252 + ... + 514155.

It is an arithmetic number, because the mean of its divisors is an integer number (69282540).

Almost surely, 2^977139464 is an apocalyptic number.

It is an amenable number.

977139464 is an abundant number, since it is smaller than the sum of its proper divisors (1239901816).

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

977139464 is a wasteful number, since it uses less digits than its factorization.

977139464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026437 (or 1026433 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 50.

The square root of 977139464 is about 31259.2300608956. The cubic root of 977139464 is about 992.3210053095.

The spelling of 977139464 in words is "nine hundred seventy-seven million, one hundred thirty-nine thousand, four hundred sixty-four".