79539855 has 32 divisors (see below), whose sum is σ = 135364608. Its totient is φ = 39744000.

The previous prime is 79539829. The next prime is 79539857. The reversal of 79539855 is 55893597.

It is not a de Polignac number, because 79539855 - 2¹⁰ = 79538831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 79539798 and 79539807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79539857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68530 + ... + 69680.

It is an arithmetic number, because the mean of its divisors is an integer number (4230144).

Almost surely, 2^79539855 is an apocalyptic number.

79539855 is a deficient number, since it is larger than the sum of its proper divisors (55824753).

79539855 is a wasteful number, since it uses less digits than its factorization.

79539855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447.

The product of its digits is 1701000, while the sum is 51.

The square root of 79539855 is about 8918.5119274462. The cubic root of 79539855 is about 430.0592220578.

The spelling of 79539855 in words is "seventy-nine million, five hundred thirty-nine thousand, eight hundred fifty-five".