27893 has 2 divisors, whose sum is σ = 27894. Its totient is φ = 27892.

The previous prime is 27883. The next prime is 27901. The reversal of 27893 is 39872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27889 + 4 = 167^2 + 2^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27893 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13946 + 13947.

It is an arithmetic number, because the mean of its divisors is an integer number (13947).

2²⁷⁸⁹³ is an apocalyptic number.

It is an amenable number.

27893 is a deficient number, since it is larger than the sum of its proper divisors (1).

27893 is an equidigital number, since it uses as much as digits as its factorization.

27893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 27893 is about 167.0119756185. The cubic root of 27893 is about 30.3271599830.

The spelling of 27893 in words is "twenty-seven thousand, eight hundred ninety-three".