27089 has 4 divisors (see below), whose sum is σ = 27456. Its totient is φ = 26724.

The previous prime is 27077. The next prime is 27091. The reversal of 27089 is 98072.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 27089 - 2⁴ = 27073 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 27089.

It is not an unprimeable number, because it can be changed into a prime (27059) 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, 29 + ... + 234.

It is an arithmetic number, because the mean of its divisors is an integer number (6864).

2²⁷⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

27089 is a deficient number, since it is larger than the sum of its proper divisors (367).

27089 is a wasteful number, since it uses less digits than its factorization.

27089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 27089 is about 164.5873628199. The cubic root of 27089 is about 30.0329268106.

The spelling of 27089 in words is "twenty-seven thousand, eighty-nine".