27933691 has 2 divisors, whose sum is σ = 27933692. Its totient is φ = 27933690.

The previous prime is 27933683. The next prime is 27933721. The reversal of 27933691 is 19633972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27933691 - 2³ = 27933683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27933391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13966845 + 13966846.

It is an arithmetic number, because the mean of its divisors is an integer number (13966846).

Almost surely, 2^27933691 is an apocalyptic number.

27933691 is a deficient number, since it is larger than the sum of its proper divisors (1).

27933691 is an equidigital number, since it uses as much as digits as its factorization.

27933691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 27933691 is about 5285.2332966483. The cubic root of 27933691 is about 303.4190015514.

The spelling of 27933691 in words is "twenty-seven million, nine hundred thirty-three thousand, six hundred ninety-one".