27009893 has 2 divisors, whose sum is σ = 27009894. Its totient is φ = 27009892.

The previous prime is 27009881. The next prime is 27009907. The reversal of 27009893 is 39890072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19518724 + 7491169 = 4418^2 + 2737^2 .

It is a cyclic number.

It is not a de Polignac number, because 27009893 - 2⁸ = 27009637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27009833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13504946 + 13504947.

It is an arithmetic number, because the mean of its divisors is an integer number (13504947).

Almost surely, 2^27009893 is an apocalyptic number.

It is an amenable number.

27009893 is a deficient number, since it is larger than the sum of its proper divisors (1).

27009893 is an equidigital number, since it uses as much as digits as its factorization.

27009893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 27009893 is about 5197.1042898907. The cubic root of 27009893 is about 300.0366362665.

The spelling of 27009893 in words is "twenty-seven million, nine thousand, eight hundred ninety-three".