77100044 has 12 divisors (see below), whose sum is σ = 154200144. Its totient is φ = 33042864.

The previous prime is 77100019. The next prime is 77100047. The reversal of 77100044 is 44000177.

77100044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 77099992 and 77100019.

It is not an unprimeable number, because it can be changed into a prime (77100047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376759 + ... + 1376814.

It is an arithmetic number, because the mean of its divisors is an integer number (12850012).

Almost surely, 2^77100044 is an apocalyptic number.

It is an amenable number.

77100044 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.

77100044 is a wasteful number, since it uses less digits than its factorization.

77100044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753584 (or 2753582 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 77100044 is about 8780.6630729120. The cubic root of 77100044 is about 425.6162575408.

The spelling of 77100044 in words is "seventy-seven million, one hundred thousand, forty-four".