77349879 has 6 divisors (see below), whose sum is σ = 111727616. Its totient is φ = 51566580.

The previous prime is 77349871. The next prime is 77349911. The reversal of 77349879 is 97894377.

It is not a de Polignac number, because 77349879 - 2³ = 77349871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77349871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4297207 + ... + 4297224.

Almost surely, 2^77349879 is an apocalyptic number.

77349879 is a deficient number, since it is larger than the sum of its proper divisors (34377737).

77349879 is a wasteful number, since it uses less digits than its factorization.

77349879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8594437 (or 8594434 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 77349879 is about 8794.8779980168. The cubic root of 77349879 is about 426.0754842104.

The spelling of 77349879 in words is "seventy-seven million, three hundred forty-nine thousand, eight hundred seventy-nine".