976999977 has 12 divisors (see below), whose sum is σ = 1414677940. Its totient is φ = 649738368.

The previous prime is 976999943. The next prime is 976999993. The reversal of 976999977 is 779999679.

It can be written as a sum of positive squares in 2 ways, for example, as 787139136 + 189860841 = 28056^2 + 13779^2 .

It is not a de Polignac number, because 976999977 - 2¹² = 976995881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (976999997) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 129028 + ... + 136389.

Almost surely, 2^976999977 is an apocalyptic number.

It is an amenable number.

976999977 is a deficient number, since it is larger than the sum of its proper divisors (437677963).

976999977 is a wasteful number, since it uses less digits than its factorization.

976999977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265832 (or 265829 counting only the distinct ones).

The product of its digits is 121522842, while the sum is 72.

The square root of 976999977 is about 31256.9988482580. The cubic root of 976999977 is about 992.2737850058.

Adding to 976999977 its sum of digits (72), we get a square (977000049 = 31257²).

It can be divided in two parts, 9769 and 99977, that added together give a triangular number (109746 = T₄₆₈).

The spelling of 976999977 in words is "nine hundred seventy-six million, nine hundred ninety-nine thousand, nine hundred seventy-seven".