27869 has 6 divisors (see below), whose sum is σ = 29790. Its totient is φ = 26040.

The previous prime is 27851. The next prime is 27883. The reversal of 27869 is 96872.

It can be written as a sum of positive squares in only one way, i.e., 24025 + 3844 = 155^2 + 62^2 .

It is not a de Polignac number, because 27869 - 2¹² = 23773 is a prime.

It is a super-2 number, since 2×27869² = 1553362322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

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 5 ways as a sum of consecutive naturals, for example, 884 + ... + 914.

It is an arithmetic number, because the mean of its divisors is an integer number (4965).

2²⁷⁸⁶⁹ is an apocalyptic number.

27869 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

27869 is a deficient number, since it is larger than the sum of its proper divisors (1921).

27869 is an equidigital number, since it uses as much as digits as its factorization.

27869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 60 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 27869 is about 166.9401090212. The cubic root of 27869 is about 30.3184593449.

The spelling of 27869 in words is "twenty-seven thousand, eight hundred sixty-nine".