977749436 has 12 divisors (see below), whose sum is σ = 1711914960. Its totient is φ = 488630880.

The previous prime is 977749417. The next prime is 977749483. The reversal of 977749436 is 634947779.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51785 + ... + 68096.

It is an arithmetic number, because the mean of its divisors is an integer number (142659580).

Almost surely, 2^977749436 is an apocalyptic number.

It is an amenable number.

977749436 is a deficient number, since it is larger than the sum of its proper divisors (734165524).

977749436 is a wasteful number, since it uses less digits than its factorization.

977749436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121924 (or 121922 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 56.

The square root of 977749436 is about 31268.9852089894. The cubic root of 977749436 is about 992.5274453471.

The spelling of 977749436 in words is "nine hundred seventy-seven million, seven hundred forty-nine thousand, four hundred thirty-six".