77934172 has 24 divisors (see below), whose sum is σ = 138179216. Its totient is φ = 38458368.

The previous prime is 77934169. The next prime is 77934187. The reversal of 77934172 is 27143977.

It is a congruent 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, 120883 + ... + 121525.

Almost surely, 2^77934172 is an apocalyptic number.

It is an amenable number.

77934172 is a deficient number, since it is larger than the sum of its proper divisors (60245044).

77934172 is a wasteful number, since it uses less digits than its factorization.

77934172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997 (or 995 counting only the distinct ones).

The product of its digits is 74088, while the sum is 40.

The square root of 77934172 is about 8828.0333030636. The cubic root of 77934172 is about 427.1456375134.

The spelling of 77934172 in words is "seventy-seven million, nine hundred thirty-four thousand, one hundred seventy-two".