77319492 has 24 divisors (see below), whose sum is σ = 185289216. Its totient is φ = 25076448.

The previous prime is 77319479. The next prime is 77319499. The reversal of 77319492 is 29491377.

It is not an unprimeable number, because it can be changed into a prime (77319499) by changing a digit.

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, 86628 + ... + 87515.

It is an arithmetic number, because the mean of its divisors is an integer number (7720384).

Almost surely, 2^77319492 is an apocalyptic number.

It is an amenable number.

77319492 is an abundant number, since it is smaller than the sum of its proper divisors (107969724).

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

77319492 is a wasteful number, since it uses less digits than its factorization.

77319492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174187 (or 174185 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The square root of 77319492 is about 8793.1502887191. The cubic root of 77319492 is about 426.0196821341.

The spelling of 77319492 in words is "seventy-seven million, three hundred nineteen thousand, four hundred ninety-two".