86959871 has 4 divisors (see below), whose sum is σ = 87006792. Its totient is φ = 86912952.

The previous prime is 86959861. The next prime is 86959883. The reversal of 86959871 is 17895968.

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

It is a cyclic number.

It is not a de Polignac number, because 86959871 - 2¹⁰ = 86958847 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 (86959801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20561 + ... + 24426.

It is an arithmetic number, because the mean of its divisors is an integer number (21751698).

Almost surely, 2^86959871 is an apocalyptic number.

86959871 is a deficient number, since it is larger than the sum of its proper divisors (46921).

86959871 is a wasteful number, since it uses less digits than its factorization.

86959871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46920.

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

The square root of 86959871 is about 9325.2276647812. The cubic root of 86959871 is about 443.0366239104.

The spelling of 86959871 in words is "eighty-six million, nine hundred fifty-nine thousand, eight hundred seventy-one".