86591139 has 16 divisors (see below), whose sum is σ = 118678560. Its totient is φ = 56125440.

The previous prime is 86591119. The next prime is 86591143. The reversal of 86591139 is 93119568.

It is not a de Polignac number, because 86591139 - 2⁹ = 86590627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86591139.

It is not an unprimeable number, because it can be changed into a prime (86591119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40407 + ... + 42495.

It is an arithmetic number, because the mean of its divisors is an integer number (7417410).

Almost surely, 2^86591139 is an apocalyptic number.

86591139 is a deficient number, since it is larger than the sum of its proper divisors (32087421).

86591139 is a wasteful number, since it uses less digits than its factorization.

86591139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470.

The product of its digits is 58320, while the sum is 42.

The square root of 86591139 is about 9305.4359919350. The cubic root of 86591139 is about 442.4095407032.

The spelling of 86591139 in words is "eighty-six million, five hundred ninety-one thousand, one hundred thirty-nine".