86139069 has 8 divisors (see below), whose sum is σ = 114899712. Its totient is φ = 57402240.

The previous prime is 86139061. The next prime is 86139083. The reversal of 86139069 is 96093168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86139069 - 2³ = 86139061 is a prime.

It is a super-2 number, since 2×86139069² = 14839878416373522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86139069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86139061) 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, 5812 + ... + 14354.

It is an arithmetic number, because the mean of its divisors is an integer number (14362464).

Almost surely, 2^86139069 is an apocalyptic number.

It is an amenable number.

86139069 is a deficient number, since it is larger than the sum of its proper divisors (28760643).

86139069 is a wasteful number, since it uses less digits than its factorization.

86139069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11907.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 86139069 is about 9281.1135646538. The cubic root of 86139069 is about 441.6382949537.

The spelling of 86139069 in words is "eighty-six million, one hundred thirty-nine thousand, sixty-nine".