86138679 has 8 divisors (see below), whose sum is σ = 125292672. Its totient is φ = 52205240.

The previous prime is 86138669. The next prime is 86138681. The reversal of 86138679 is 97683168.

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

It is a cyclic number.

It is not a de Polignac number, because 86138679 - 2¹² = 86134583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86138659) 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, 1305099 + ... + 1305164.

It is an arithmetic number, because the mean of its divisors is an integer number (15661584).

Almost surely, 2^86138679 is an apocalyptic number.

86138679 is a deficient number, since it is larger than the sum of its proper divisors (39153993).

86138679 is a wasteful number, since it uses less digits than its factorization.

86138679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610277.

The product of its digits is 435456, while the sum is 48.

The square root of 86138679 is about 9281.0925542201. The cubic root of 86138679 is about 441.6376284378.

The spelling of 86138679 in words is "eighty-six million, one hundred thirty-eight thousand, six hundred seventy-nine".