79845479 has 8 divisors (see below), whose sum is σ = 91716768. Its totient is φ = 68090400.

The previous prime is 79845463. The next prime is 79845487. The reversal of 79845479 is 97454897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79845479 - 2⁴ = 79845463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79845479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79842479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27572 + ... + 30329.

It is an arithmetic number, because the mean of its divisors is an integer number (11464596).

Almost surely, 2^79845479 is an apocalyptic number.

79845479 is a deficient number, since it is larger than the sum of its proper divisors (11871289).

79845479 is a wasteful number, since it uses less digits than its factorization.

79845479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58105.

The product of its digits is 2540160, while the sum is 53.

The square root of 79845479 is about 8935.6297483725. The cubic root of 79845479 is about 430.6093380314.

The spelling of 79845479 in words is "seventy-nine million, eight hundred forty-five thousand, four hundred seventy-nine".