86908929 has 4 divisors (see below), whose sum is σ = 115878576. Its totient is φ = 57939284.

The previous prime is 86908901. The next prime is 86908933. The reversal of 86908929 is 92980968.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86908929 - 2⁵ = 86908897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86908999) 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, 14484819 + ... + 14484824.

It is an arithmetic number, because the mean of its divisors is an integer number (28969644).

Almost surely, 2^86908929 is an apocalyptic number.

It is an amenable number.

86908929 is a deficient number, since it is larger than the sum of its proper divisors (28969647).

86908929 is a wasteful number, since it uses less digits than its factorization.

86908929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28969646.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 86908929 is about 9322.4958567971. The cubic root of 86908929 is about 442.9500951856.

The spelling of 86908929 in words is "eighty-six million, nine hundred eight thousand, nine hundred twenty-nine".