86522879 has 4 divisors (see below), whose sum is σ = 86566200. Its totient is φ = 86479560.

The previous prime is 86522869. The next prime is 86522893. The reversal of 86522879 is 97822568.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86522879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86522869) 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 3 ways as a sum of consecutive naturals, for example, 18512 + ... + 22709.

It is an arithmetic number, because the mean of its divisors is an integer number (21641550).

Almost surely, 2^86522879 is an apocalyptic number.

86522879 is a deficient number, since it is larger than the sum of its proper divisors (43321).

86522879 is a wasteful number, since it uses less digits than its factorization.

86522879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43320.

The product of its digits is 483840, while the sum is 47.

The square root of 86522879 is about 9301.7675202082. The cubic root of 86522879 is about 442.2932593132.

The spelling of 86522879 in words is "eighty-six million, five hundred twenty-two thousand, eight hundred seventy-nine".