79444423984 has 20 divisors (see below), whose sum is σ = 159231281760. Its totient is φ = 38352480320.

The previous prime is 79444423973. The next prime is 79444423997. The reversal of 79444423984 is 48932444497.

It is a happy number.

It is a super-2 number, since 2×79444423984² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

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, 85607752 + ... + 85608679.

It is an arithmetic number, because the mean of its divisors is an integer number (7961564088).

Almost surely, 2^79444423984 is an apocalyptic number.

It is an amenable number.

79444423984 is an abundant number, since it is smaller than the sum of its proper divisors (79786857776).

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

79444423984 is a wasteful number, since it uses less digits than its factorization.

79444423984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171216468 (or 171216462 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 58.

The spelling of 79444423984 in words is "seventy-nine billion, four hundred forty-four million, four hundred twenty-three thousand, nine hundred eighty-four".