77434436 has 6 divisors (see below), whose sum is σ = 135510270. Its totient is φ = 38717216.

The previous prime is 77434429. The next prime is 77434447. The reversal of 77434436 is 63443477.

It can be written as a sum of positive squares in only one way, i.e., 71402500 + 6031936 = 8450^2 + 2456^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77434436.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9679301 + ... + 9679308.

It is an arithmetic number, because the mean of its divisors is an integer number (22585045).

Almost surely, 2^77434436 is an apocalyptic number.

It is an amenable number.

77434436 is a deficient number, since it is larger than the sum of its proper divisors (58075834).

77434436 is a wasteful number, since it uses less digits than its factorization.

77434436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19358613 (or 19358611 counting only the distinct ones).

The product of its digits is 169344, while the sum is 38.

The square root of 77434436 is about 8799.6838579576. The cubic root of 77434436 is about 426.2306861101.

The spelling of 77434436 in words is "seventy-seven million, four hundred thirty-four thousand, four hundred thirty-six".