86219917 has 8 divisors (see below), whose sum is σ = 98596800. Its totient is φ = 73857984.

The previous prime is 86219911. The next prime is 86219957. The reversal of 86219917 is 71991268.

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 86219917 - 2³ = 86219909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86219911) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 14709 + ... + 19717.

It is an arithmetic number, because the mean of its divisors is an integer number (12324600).

Almost surely, 2^86219917 is an apocalyptic number.

It is an amenable number.

86219917 is a deficient number, since it is larger than the sum of its proper divisors (12376883).

86219917 is a wasteful number, since it uses less digits than its factorization.

86219917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7475.

The product of its digits is 54432, while the sum is 43.

The square root of 86219917 is about 9285.4680549771. The cubic root of 86219917 is about 441.7764220093.

The spelling of 86219917 in words is "eighty-six million, two hundred nineteen thousand, nine hundred seventeen".