79973556 has 48 divisors (see below), whose sum is σ = 204388800. Its totient is φ = 24187392.

The previous prime is 79973513. The next prime is 79973557. The reversal of 79973556 is 65537997.

It is a junction number, because it is equal to n+sod(n) for n = 79973499 and 79973508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79973557) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4860 + ... + 13548.

It is an arithmetic number, because the mean of its divisors is an integer number (4258100).

Almost surely, 2^79973556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79973556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102194400).

79973556 is an abundant number, since it is smaller than the sum of its proper divisors (124415244).

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

79973556 is a wasteful number, since it uses less digits than its factorization.

79973556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8768 (or 8766 counting only the distinct ones).

The product of its digits is 1786050, while the sum is 51.

The square root of 79973556 is about 8942.7935232790. The cubic root of 79973556 is about 430.8394562152.

The spelling of 79973556 in words is "seventy-nine million, nine hundred seventy-three thousand, five hundred fifty-six".