86506839 has 8 divisors (see below), whose sum is σ = 128158320. Its totient is φ = 57671208.

The previous prime is 86506813. The next prime is 86506859. The reversal of 86506839 is 93860568.

It is not a de Polignac number, because 86506839 - 2⁷ = 86506711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86506794 and 86506803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86506859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601952 + ... + 1602005.

It is an arithmetic number, because the mean of its divisors is an integer number (16019790).

Almost surely, 2^86506839 is an apocalyptic number.

86506839 is a deficient number, since it is larger than the sum of its proper divisors (41651481).

86506839 is a wasteful number, since it uses less digits than its factorization.

86506839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203966 (or 3203960 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 86506839 is about 9300.9052785199. The cubic root of 86506839 is about 442.2659261870.

The spelling of 86506839 in words is "eighty-six million, five hundred six thousand, eight hundred thirty-nine".