86855629 has 4 divisors (see below), whose sum is σ = 99263584. Its totient is φ = 74447676.

The previous prime is 86855623. The next prime is 86855641. The reversal of 86855629 is 92655868.

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 86855629 - 2³ = 86855621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86855621) 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, 6203967 + ... + 6203980.

It is an arithmetic number, because the mean of its divisors is an integer number (24815896).

Almost surely, 2^86855629 is an apocalyptic number.

It is an amenable number.

86855629 is a deficient number, since it is larger than the sum of its proper divisors (12407955).

86855629 is a wasteful number, since it uses less digits than its factorization.

86855629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12407954.

The product of its digits is 1036800, while the sum is 49.

The square root of 86855629 is about 9319.6367418478. The cubic root of 86855629 is about 442.8595250206.

The spelling of 86855629 in words is "eighty-six million, eight hundred fifty-five thousand, six hundred twenty-nine".