79941645 has 96 divisors (see below), whose sum is σ = 171674880. Its totient is φ = 33685632.

The previous prime is 79941623. The next prime is 79941671. The reversal of 79941645 is 54614997.

It is not a de Polignac number, because 79941645 - 2⁵ = 79941613 is a prime.

It is a super-3 number, since 3×79941645³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (272160) is a multiple of the sum of its prime factors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 79941645.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 2160567 + ... + 2160603.

It is an arithmetic number, because the mean of its divisors is an integer number (1788280).

Almost surely, 2^79941645 is an apocalyptic number.

It is an amenable number.

79941645 is an abundant number, since it is smaller than the sum of its proper divisors (91733235).

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

79941645 is a wasteful number, since it uses less digits than its factorization.

79941645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 71 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 79941645 is about 8941.0091712289. The cubic root of 79941645 is about 430.7821441584.

Adding to 79941645 its sum of digits (45), we get a triangular number (79941690 = T₁₂₆₄₄).

The spelling of 79941645 in words is "seventy-nine million, nine hundred forty-one thousand, six hundred forty-five".