79979445 has 48 divisors (see below), whose sum is σ = 170631552. Its totient is φ = 33747840.

The previous prime is 79979437. The next prime is 79979447. The reversal of 79979445 is 54497997.

It is not a de Polignac number, because 79979445 - 2³ = 79979437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79979391 and 79979400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79979447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5671 + ... + 13860.

It is an arithmetic number, because the mean of its divisors is an integer number (3554824).

Almost surely, 2^79979445 is an apocalyptic number.

It is an amenable number.

79979445 is an abundant number, since it is smaller than the sum of its proper divisors (90652107).

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

79979445 is a wasteful number, since it uses less digits than its factorization.

79979445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19562 (or 19559 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 79979445 is about 8943.1227767486. The cubic root of 79979445 is about 430.8500311744.

The spelling of 79979445 in words is "seventy-nine million, nine hundred seventy-nine thousand, four hundred forty-five".