82426879 has 4 divisors (see below), whose sum is σ = 82542240. Its totient is φ = 82311520.

The previous prime is 82426867. The next prime is 82426907. The reversal of 82426879 is 97862428.

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

It is a cyclic number.

It is not a de Polignac number, because 82426879 - 2⁵ = 82426847 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 (82426859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56602 + ... + 58039.

It is an arithmetic number, because the mean of its divisors is an integer number (20635560).

Almost surely, 2^82426879 is an apocalyptic number.

82426879 is a deficient number, since it is larger than the sum of its proper divisors (115361).

82426879 is a wasteful number, since it uses less digits than its factorization.

82426879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115360.

The product of its digits is 387072, while the sum is 46.

The square root of 82426879 is about 9078.9249914293. The cubic root of 82426879 is about 435.2007335329.

The spelling of 82426879 in words is "eighty-two million, four hundred twenty-six thousand, eight hundred seventy-nine".