77954992 has 10 divisors (see below), whose sum is σ = 151037828. Its totient is φ = 38977488.

The previous prime is 77954983. The next prime is 77955019. The reversal of 77954992 is 29945977.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2436078 + ... + 2436109.

Almost surely, 2^77954992 is an apocalyptic number.

It is an amenable number.

77954992 is a deficient number, since it is larger than the sum of its proper divisors (73082836).

77954992 is a wasteful number, since it uses less digits than its factorization.

77954992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872195 (or 4872189 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 52.

The square root of 77954992 is about 8829.2124224078. The cubic root of 77954992 is about 427.1836712374.

The spelling of 77954992 in words is "seventy-seven million, nine hundred fifty-four thousand, nine hundred ninety-two".