77957922 has 24 divisors (see below), whose sum is σ = 181372176. Its totient is φ = 22273608.

The previous prime is 77957921. The next prime is 77957947. The reversal of 77957922 is 22975977.

It is not an unprimeable number, because it can be changed into a prime (77957921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132288 + ... + 132875.

It is an arithmetic number, because the mean of its divisors is an integer number (7557174).

Almost surely, 2^77957922 is an apocalyptic number.

77957922 is an abundant number, since it is smaller than the sum of its proper divisors (103414254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77957922 is a wasteful number, since it uses less digits than its factorization.

77957922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265182 (or 265175 counting only the distinct ones).

The product of its digits is 555660, while the sum is 48.

The square root of 77957922 is about 8829.3783473130. The cubic root of 77957922 is about 427.1890231823.

The spelling of 77957922 in words is "seventy-seven million, nine hundred fifty-seven thousand, nine hundred twenty-two".