79789845 has 16 divisors (see below), whose sum is σ = 127775232. Its totient is φ = 42517440.

The previous prime is 79789841. The next prime is 79789847. The reversal of 79789845 is 54898797.

It is not a de Polignac number, because 79789845 - 2² = 79789841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79789841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29500 + ... + 32090.

It is an arithmetic number, because the mean of its divisors is an integer number (7985952).

Almost surely, 2^79789845 is an apocalyptic number.

It is an amenable number.

79789845 is a deficient number, since it is larger than the sum of its proper divisors (47985387).

79789845 is a wasteful number, since it uses less digits than its factorization.

79789845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652.

The product of its digits is 5080320, while the sum is 57.

The square root of 79789845 is about 8932.5161628737. The cubic root of 79789845 is about 430.5093027865.

The spelling of 79789845 in words is "seventy-nine million, seven hundred eighty-nine thousand, eight hundred forty-five".