77044436 has 12 divisors (see below), whose sum is σ = 154088928. Its totient is φ = 33019032.

The previous prime is 77044381. The next prime is 77044441. The reversal of 77044436 is 63444077.

77044436 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 77044396 and 77044405.

It is a congruent number.

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, 1375766 + ... + 1375821.

It is an arithmetic number, because the mean of its divisors is an integer number (12840744).

Almost surely, 2^77044436 is an apocalyptic number.

It is an amenable number.

77044436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77044436 is a wasteful number, since it uses less digits than its factorization.

77044436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751598 (or 2751596 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 77044436 is about 8777.4959982902. The cubic root of 77044436 is about 425.5139084371.

The spelling of 77044436 in words is "seventy-seven million, forty-four thousand, four hundred thirty-six".