977399866 has 16 divisors (see below), whose sum is σ = 1486233504. Its totient is φ = 482008464.

The previous prime is 977399851. The next prime is 977399873. The reversal of 977399866 is 668993779.

It is a junction number, because it is equal to n+sod(n) for n = 977399798 and 977399807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102160 + ... + 111316.

It is an arithmetic number, because the mean of its divisors is an integer number (92889594).

Almost surely, 2^977399866 is an apocalyptic number.

977399866 is a deficient number, since it is larger than the sum of its proper divisors (508833638).

977399866 is a wasteful number, since it uses less digits than its factorization.

977399866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9885.

The product of its digits is 30862944, while the sum is 64.

The square root of 977399866 is about 31263.3949851899. The cubic root of 977399866 is about 992.4091467445.

The spelling of 977399866 in words is "nine hundred seventy-seven million, three hundred ninety-nine thousand, eight hundred sixty-six".