86915879 has 8 divisors (see below), whose sum is σ = 88719360. Its totient is φ = 85130136.

The previous prime is 86915869. The next prime is 86915893. The reversal of 86915879 is 97851968.

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 86915879 - 2⁴ = 86915863 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 86915879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86915819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5702 + ... + 14364.

It is an arithmetic number, because the mean of its divisors is an integer number (11089920).

Almost surely, 2^86915879 is an apocalyptic number.

86915879 is a deficient number, since it is larger than the sum of its proper divisors (1803481).

86915879 is a wasteful number, since it uses less digits than its factorization.

86915879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8869.

The product of its digits is 1088640, while the sum is 53.

The square root of 86915879 is about 9322.8686036005. The cubic root of 86915879 is about 442.9619022621.

The spelling of 86915879 in words is "eighty-six million, nine hundred fifteen thousand, eight hundred seventy-nine".