27919 has 2 divisors, whose sum is σ = 27920. Its totient is φ = 27918.

The previous prime is 27917. The next prime is 27941. The reversal of 27919 is 91972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27919 - 2¹ = 27917 is a prime.

It is a super-2 number, since 2×27919² = 1558941122, which contains 22 as substring.

Together with 27917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13959 + 13960.

It is an arithmetic number, because the mean of its divisors is an integer number (13960).

2²⁷⁹¹⁹ is an apocalyptic number.

27919 is a deficient number, since it is larger than the sum of its proper divisors (1).

27919 is an equidigital number, since it uses as much as digits as its factorization.

27919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 28.

The square root of 27919 is about 167.0897962175. The cubic root of 27919 is about 30.3365800440.

It can be divided in two parts, 27 and 919, that added together give a triangular number (946 = T₄₃).

The spelling of 27919 in words is "twenty-seven thousand, nine hundred nineteen".