77434408 has 16 divisors (see below), whose sum is σ = 150196500. Its totient is φ = 37382016.

The previous prime is 77434397. The next prime is 77434411. The reversal of 77434408 is 80443477.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67207204 + 10227204 = 8198^2 + 3198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166653 + ... + 167116.

Almost surely, 2^77434408 is an apocalyptic number.

It is an amenable number.

77434408 is a deficient number, since it is larger than the sum of its proper divisors (72762092).

77434408 is a wasteful number, since it uses less digits than its factorization.

77434408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333804 (or 333800 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 77434408 is about 8799.6822669912. The cubic root of 77434408 is about 426.2306347357.

The spelling of 77434408 in words is "seventy-seven million, four hundred thirty-four thousand, four hundred eight".