86179971 has 4 divisors (see below), whose sum is σ = 114906632. Its totient is φ = 57453312.

The previous prime is 86179949. The next prime is 86180027. The reversal of 86179971 is 17997168.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86179971 - 2⁵ = 86179939 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 86179971.

It is not an unprimeable number, because it can be changed into a prime (86179921) 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, 14363326 + ... + 14363331.

It is an arithmetic number, because the mean of its divisors is an integer number (28726658).

Almost surely, 2^86179971 is an apocalyptic number.

86179971 is a deficient number, since it is larger than the sum of its proper divisors (28726661).

86179971 is a wasteful number, since it uses less digits than its factorization.

86179971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28726660.

The product of its digits is 190512, while the sum is 48.

The square root of 86179971 is about 9283.3168102785. The cubic root of 86179971 is about 441.7081859311.

The spelling of 86179971 in words is "eighty-six million, one hundred seventy-nine thousand, nine hundred seventy-one".