79669573 has 4 divisors (see below), whose sum is σ = 80443168. Its totient is φ = 78895980.

The previous prime is 79669561. The next prime is 79669607. The reversal of 79669573 is 37596697.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79669573 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 79669573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79669523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386643 + ... + 386848.

It is an arithmetic number, because the mean of its divisors is an integer number (20110792).

Almost surely, 2^79669573 is an apocalyptic number.

It is an amenable number.

79669573 is a deficient number, since it is larger than the sum of its proper divisors (773595).

79669573 is a wasteful number, since it uses less digits than its factorization.

79669573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773594.

The product of its digits is 2143260, while the sum is 52.

The square root of 79669573 is about 8925.7813663567. The cubic root of 79669573 is about 430.2928832124.

The spelling of 79669573 in words is "seventy-nine million, six hundred sixty-nine thousand, five hundred seventy-three".