86091 has 4 divisors (see below), whose sum is σ = 114792. Its totient is φ = 57392.

The previous prime is 86083. The next prime is 86111. The reversal of 86091 is 19068.

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 86091 - 2³ = 86083 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (86011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14346 + ... + 14351.

It is an arithmetic number, because the mean of its divisors is an integer number (28698).

2⁸⁶⁰⁹¹ is an apocalyptic number.

86091 is a deficient number, since it is larger than the sum of its proper divisors (28701).

86091 is a wasteful number, since it uses less digits than its factorization.

86091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28700.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 86091 is about 293.4126786627. The cubic root of 86091 is about 44.1556129135.

The spelling of 86091 in words is "eighty-six thousand, ninety-one".