86172699 has 4 divisors (see below), whose sum is σ = 114896936. Its totient is φ = 57448464.

The previous prime is 86172689. The next prime is 86172703. The reversal of 86172699 is 99627168.

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

It is not a de Polignac number, because 86172699 - 2⁷ = 86172571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86172649) 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, 14362114 + ... + 14362119.

It is an arithmetic number, because the mean of its divisors is an integer number (28724234).

Almost surely, 2^86172699 is an apocalyptic number.

86172699 is a deficient number, since it is larger than the sum of its proper divisors (28724237).

86172699 is a wasteful number, since it uses less digits than its factorization.

86172699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28724236.

The product of its digits is 326592, while the sum is 48.

The square root of 86172699 is about 9282.9251316597. The cubic root of 86172699 is about 441.6957615737.

The spelling of 86172699 in words is "eighty-six million, one hundred seventy-two thousand, six hundred ninety-nine".