86117823 has 40 divisors (see below), whose sum is σ = 147755520. Its totient is φ = 49435920.

The previous prime is 86117807. The next prime is 86117839. The reversal of 86117823 is 32871168.

It is an interprime number because it is at equal distance from previous prime (86117807) and next prime (86117839).

It is not a de Polignac number, because 86117823 - 2⁴ = 86117807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86117803) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14386 + ... + 19472.

It is an arithmetic number, because the mean of its divisors is an integer number (3693888).

Almost surely, 2^86117823 is an apocalyptic number.

86117823 is a deficient number, since it is larger than the sum of its proper divisors (61637697).

86117823 is a wasteful number, since it uses less digits than its factorization.

86117823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5120 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 86117823 is about 9279.9689115859. The cubic root of 86117823 is about 441.6019822838.

The spelling of 86117823 in words is "eighty-six million, one hundred seventeen thousand, eight hundred twenty-three".