977457896 has 8 divisors (see below), whose sum is σ = 1832733570. Its totient is φ = 488728944.

The previous prime is 977457893. The next prime is 977457937. The reversal of 977457896 is 698754779.

It can be written as a sum of positive squares in only one way, i.e., 565773796 + 411684100 = 23786^2 + 20290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (977457893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61091111 + ... + 61091126.

Almost surely, 2^977457896 is an apocalyptic number.

It is an amenable number.

977457896 is a deficient number, since it is larger than the sum of its proper divisors (855275674).

977457896 is a wasteful number, since it uses less digits than its factorization.

977457896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122182243 (or 122182239 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 62.

The square root of 977457896 is about 31264.3230536022. The cubic root of 977457896 is about 992.4287867319.

The spelling of 977457896 in words is "nine hundred seventy-seven million, four hundred fifty-seven thousand, eight hundred ninety-six".