27793291 has 2 divisors, whose sum is σ = 27793292. Its totient is φ = 27793290.

The previous prime is 27793289. The next prime is 27793301. The reversal of 27793291 is 19239772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27793291 - 2¹ = 27793289 is a prime.

It is a super-2 number, since 2×27793291² = 1544934049221362, which contains 22 as substring.

Together with 27793289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27793231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13896645 + 13896646.

It is an arithmetic number, because the mean of its divisors is an integer number (13896646).

Almost surely, 2^27793291 is an apocalyptic number.

27793291 is a deficient number, since it is larger than the sum of its proper divisors (1).

27793291 is an equidigital number, since it uses as much as digits as its factorization.

27793291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 27793291 is about 5271.9342750076. The cubic root of 27793291 is about 302.9098004377.

The spelling of 27793291 in words is "twenty-seven million, seven hundred ninety-three thousand, two hundred ninety-one".