77079408 has 40 divisors (see below), whose sum is σ = 227568768. Its totient is φ = 22022592.

The previous prime is 77079403. The next prime is 77079421. The reversal of 77079408 is 80497077.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 77079408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77079403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114366 + ... + 115037.

Almost surely, 2^77079408 is an apocalyptic number.

It is an amenable number.

77079408 is an abundant number, since it is smaller than the sum of its proper divisors (150489360).

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

77079408 is a wasteful number, since it uses less digits than its factorization.

77079408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229421 (or 229415 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 77079408 is about 8779.4879121735. The cubic root of 77079408 is about 425.5782817700.

The spelling of 77079408 in words is "seventy-seven million, seventy-nine thousand, four hundred eight".