82860439 has 4 divisors (see below), whose sum is σ = 82941840. Its totient is φ = 82779040.

The previous prime is 82860413. The next prime is 82860451. The reversal of 82860439 is 93406828.

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 82860439 - 2⁹ = 82859927 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 (82869439) 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, 39154 + ... + 41215.

It is an arithmetic number, because the mean of its divisors is an integer number (20735460).

Almost surely, 2^82860439 is an apocalyptic number.

82860439 is a deficient number, since it is larger than the sum of its proper divisors (81401).

82860439 is a wasteful number, since it uses less digits than its factorization.

82860439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81400.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 82860439 is about 9102.7709517487. The cubic root of 82860439 is about 435.9624420556.

The spelling of 82860439 in words is "eighty-two million, eight hundred sixty thousand, four hundred thirty-nine".