27879 has 4 divisors (see below), whose sum is σ = 37176. Its totient is φ = 18584.

The previous prime is 27851. The next prime is 27883. The reversal of 27879 is 97872.

Added to its reverse (97872) it gives a triangular number (125751 = T₅₀₁).

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 27879 - 2⁵ = 27847 is a prime.

It is a D-number.

27879 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27809) 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, 4644 + ... + 4649.

It is an arithmetic number, because the mean of its divisors is an integer number (9294).

2²⁷⁸⁷⁹ is an apocalyptic number.

27879 is a deficient number, since it is larger than the sum of its proper divisors (9297).

27879 is an equidigital number, since it uses as much as digits as its factorization.

27879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9296.

The product of its digits is 7056, while the sum is 33.

The square root of 27879 is about 166.9700571959. The cubic root of 27879 is about 30.3220852175.

Adding to 27879 its reverse (97872), we get a triangular number (125751 = T₅₀₁).

The spelling of 27879 in words is "twenty-seven thousand, eight hundred seventy-nine".