27090493 has 2 divisors, whose sum is σ = 27090494. Its totient is φ = 27090492.

The previous prime is 27090491. The next prime is 27090509. The reversal of 27090493 is 39409072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27019204 + 71289 = 5198^2 + 267^2 .

It is a cyclic number.

It is not a de Polignac number, because 27090493 - 2¹ = 27090491 is a prime.

Together with 27090491, 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 (27090491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13545246 + 13545247.

It is an arithmetic number, because the mean of its divisors is an integer number (13545247).

Almost surely, 2^27090493 is an apocalyptic number.

It is an amenable number.

27090493 is a deficient number, since it is larger than the sum of its proper divisors (1).

27090493 is an equidigital number, since it uses as much as digits as its factorization.

27090493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 27090493 is about 5204.8528317331. The cubic root of 27090493 is about 300.3347855158.

The spelling of 27090493 in words is "twenty-seven million, ninety thousand, four hundred ninety-three".