79389487928 has 16 divisors (see below), whose sum is σ = 149494157280. Its totient is φ = 39524379328.

The previous prime is 79389487907. The next prime is 79389487937. The reversal of 79389487928 is 82978498397.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21293600 + ... + 21297327.

It is an arithmetic number, because the mean of its divisors is an integer number (9343384830).

Almost surely, 2^79389487928 is an apocalyptic number.

It is an amenable number.

79389487928 is a deficient number, since it is larger than the sum of its proper divisors (70104669352).

79389487928 is a wasteful number, since it uses less digits than its factorization.

79389487928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42591166 (or 42591162 counting only the distinct ones).

The product of its digits is 438939648, while the sum is 74.

The spelling of 79389487928 in words is "seventy-nine billion, three hundred eighty-nine million, four hundred eighty-seven thousand, nine hundred twenty-eight".