86959689 has 4 divisors (see below), whose sum is σ = 115946256. Its totient is φ = 57973124.

The previous prime is 86959673. The next prime is 86959693. The reversal of 86959689 is 98695968.

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 86959689 - 2⁴ = 86959673 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86959669) 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, 14493279 + ... + 14493284.

It is an arithmetic number, because the mean of its divisors is an integer number (28986564).

Almost surely, 2^86959689 is an apocalyptic number.

It is an amenable number.

86959689 is a deficient number, since it is larger than the sum of its proper divisors (28986567).

86959689 is a wasteful number, since it uses less digits than its factorization.

86959689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28986566.

The product of its digits is 8398080, while the sum is 60.

The square root of 86959689 is about 9325.2179063012. The cubic root of 86959689 is about 443.0363148302.

The spelling of 86959689 in words is "eighty-six million, nine hundred fifty-nine thousand, six hundred eighty-nine".