27874391 has 2 divisors, whose sum is σ = 27874392. Its totient is φ = 27874390.

The previous prime is 27874381. The next prime is 27874403. The reversal of 27874391 is 19347872.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27874391 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27874351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13937195 + 13937196.

It is an arithmetic number, because the mean of its divisors is an integer number (13937196).

Almost surely, 2^27874391 is an apocalyptic number.

27874391 is a deficient number, since it is larger than the sum of its proper divisors (1).

27874391 is an equidigital number, since it uses as much as digits as its factorization.

27874391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 27874391 is about 5279.6203461991. The cubic root of 27874391 is about 303.2041416056.

The spelling of 27874391 in words is "twenty-seven million, eight hundred seventy-four thousand, three hundred ninety-one".