77939230 has 16 divisors (see below), whose sum is σ = 140395680. Its totient is φ = 31152352.

The previous prime is 77939189. The next prime is 77939231. The reversal of 77939230 is 3293977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77939231) 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 7 ways as a sum of consecutive naturals, for example, 18807 + ... + 22573.

It is an arithmetic number, because the mean of its divisors is an integer number (8774730).

Almost surely, 2^77939230 is an apocalyptic number.

77939230 is a deficient number, since it is larger than the sum of its proper divisors (62456450).

77939230 is a wasteful number, since it uses less digits than its factorization.

77939230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 77939230 is about 8828.3197721877. The cubic root of 77939230 is about 427.1548780294.

The spelling of 77939230 in words is "seventy-seven million, nine hundred thirty-nine thousand, two hundred thirty".