86112139 has 4 divisors (see below), whose sum is σ = 86133240. Its totient is φ = 86091040.

The previous prime is 86112113. The next prime is 86112151. The reversal of 86112139 is 93121168.

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 86112139 - 2¹⁷ = 85981067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86112139.

It is not an unprimeable number, because it can be changed into a prime (86112109) 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, 2254 + ... + 13315.

It is an arithmetic number, because the mean of its divisors is an integer number (21533310).

Almost surely, 2^86112139 is an apocalyptic number.

86112139 is a deficient number, since it is larger than the sum of its proper divisors (21101).

86112139 is a wasteful number, since it uses less digits than its factorization.

86112139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21100.

The product of its digits is 2592, while the sum is 31.

The square root of 86112139 is about 9279.6626555064. The cubic root of 86112139 is about 441.5922664440.

It can be divided in two parts, 86 and 112139, that added together give a square (112225 = 335²).

The spelling of 86112139 in words is "eighty-six million, one hundred twelve thousand, one hundred thirty-nine".