77388964 has 24 divisors (see below), whose sum is σ = 143700480. Its totient is φ = 36341376.

The previous prime is 77388959. The next prime is 77388973. The reversal of 77388964 is 46988377.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43117 + ... + 44875.

It is an arithmetic number, because the mean of its divisors is an integer number (5987520).

Almost surely, 2^77388964 is an apocalyptic number.

It is an amenable number.

77388964 is a deficient number, since it is larger than the sum of its proper divisors (66311516).

77388964 is a wasteful number, since it uses less digits than its factorization.

77388964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427 (or 2425 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 77388964 is about 8797.0997493492. The cubic root of 77388964 is about 426.1472376350.

The spelling of 77388964 in words is "seventy-seven million, three hundred eighty-eight thousand, nine hundred sixty-four".