86389839 has 24 divisors (see below), whose sum is σ = 129292800. Its totient is φ = 55527120.

The previous prime is 86389813. The next prime is 86389859. The reversal of 86389839 is 93898368.

It is not a de Polignac number, because 86389839 - 2⁷ = 86389711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86389859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116532 + ... + 117270.

It is an arithmetic number, because the mean of its divisors is an integer number (5387200).

Almost surely, 2^86389839 is an apocalyptic number.

86389839 is a deficient number, since it is larger than the sum of its proper divisors (42902961).

86389839 is a wasteful number, since it uses less digits than its factorization.

86389839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195 (or 1192 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 86389839 is about 9294.6134400523. The cubic root of 86389839 is about 442.0664488593.

The spelling of 86389839 in words is "eighty-six million, three hundred eighty-nine thousand, eight hundred thirty-nine".