78944456 has 16 divisors (see below), whose sum is σ = 148281840. Its totient is φ = 39402640.

The previous prime is 78944429. The next prime is 78944477. The reversal of 78944456 is 65444987.

It is a self number, because there is not a number n which added to its sum of digits gives 78944456.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710 + ... + 13101.

It is an arithmetic number, because the mean of its divisors is an integer number (9267615).

Almost surely, 2^78944456 is an apocalyptic number.

It is an amenable number.

78944456 is a deficient number, since it is larger than the sum of its proper divisors (69337384).

78944456 is a wasteful number, since it uses less digits than its factorization.

78944456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17404 (or 17400 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 78944456 is about 8885.0692737873. The cubic root of 78944456 is about 428.9834577582.

The spelling of 78944456 in words is "seventy-eight million, nine hundred forty-four thousand, four hundred fifty-six".