79945445 has 16 divisors (see below), whose sum is σ = 101303040. Its totient is φ = 60398784.

The previous prime is 79945429. The next prime is 79945457. The reversal of 79945445 is 54454997.

It is a cyclic number.

It is not a de Polignac number, because 79945445 - 2⁴ = 79945429 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 79945445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33719 + ... + 36011.

It is an arithmetic number, because the mean of its divisors is an integer number (6331440).

Almost surely, 2^79945445 is an apocalyptic number.

It is an amenable number.

79945445 is a deficient number, since it is larger than the sum of its proper divisors (21357595).

79945445 is a wasteful number, since it uses less digits than its factorization.

79945445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684.

The product of its digits is 907200, while the sum is 47.

The square root of 79945445 is about 8941.2216726799. The cubic root of 79945445 is about 430.7889697465.

The spelling of 79945445 in words is "seventy-nine million, nine hundred forty-five thousand, four hundred forty-five".