27933391 has 2 divisors, whose sum is σ = 27933392. Its totient is φ = 27933390.

The previous prime is 27933379. The next prime is 27933403. The reversal of 27933391 is 19333972.

It is a balanced prime because it is at equal distance from previous prime (27933379) and next prime (27933403).

It is a cyclic number.

It is not a de Polignac number, because 27933391 - 2²³ = 19544783 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27933391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27933331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13966695 + 13966696.

It is an arithmetic number, because the mean of its divisors is an integer number (13966696).

Almost surely, 2^27933391 is an apocalyptic number.

27933391 is a deficient number, since it is larger than the sum of its proper divisors (1).

27933391 is an equidigital number, since it uses as much as digits as its factorization.

27933391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 37.

The square root of 27933391 is about 5285.2049156111. The cubic root of 27933391 is about 303.4179153359.

It can be divided in two parts, 279 and 33391, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 27933391 in words is "twenty-seven million, nine hundred thirty-three thousand, three hundred ninety-one".