86391142 has 4 divisors (see below), whose sum is σ = 129586716. Its totient is φ = 43195570.

The previous prime is 86391103. The next prime is 86391169. The reversal of 86391142 is 24119368.

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

It is a junction number, because it is equal to n+sod(n) for n = 86391098 and 86391107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21597784 + ... + 21597787.

It is an arithmetic number, because the mean of its divisors is an integer number (32396679).

Almost surely, 2^86391142 is an apocalyptic number.

86391142 is a deficient number, since it is larger than the sum of its proper divisors (43195574).

86391142 is a wasteful number, since it uses less digits than its factorization.

86391142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43195573.

The product of its digits is 10368, while the sum is 34.

The square root of 86391142 is about 9294.6835341500. The cubic root of 86391142 is about 442.0686713802.

The spelling of 86391142 in words is "eighty-six million, three hundred ninety-one thousand, one hundred forty-two".