86159923 has 4 divisors (see below), whose sum is σ = 87445960. Its totient is φ = 84873888.

The previous prime is 86159911. The next prime is 86159933. The reversal of 86159923 is 32995168.

It is a happy number.

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 86159923 - 2⁵ = 86159891 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 86159923.

It is not an unprimeable number, because it can be changed into a prime (86159933) 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, 642918 + ... + 643051.

It is an arithmetic number, because the mean of its divisors is an integer number (21861490).

Almost surely, 2^86159923 is an apocalyptic number.

86159923 is a deficient number, since it is larger than the sum of its proper divisors (1286037).

86159923 is a wasteful number, since it uses less digits than its factorization.

86159923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286036.

The product of its digits is 116640, while the sum is 43.

The square root of 86159923 is about 9282.2369609917. The cubic root of 86159923 is about 441.6739318294.

The spelling of 86159923 in words is "eighty-six million, one hundred fifty-nine thousand, nine hundred twenty-three".