27992087 has 2 divisors, whose sum is σ = 27992088. Its totient is φ = 27992086.

The previous prime is 27992077. The next prime is 27992093. The reversal of 27992087 is 78029972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27992087 - 2¹² = 27987991 is a 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 (27992077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13996043 + 13996044.

It is an arithmetic number, because the mean of its divisors is an integer number (13996044).

Almost surely, 2^27992087 is an apocalyptic number.

27992087 is a deficient number, since it is larger than the sum of its proper divisors (1).

27992087 is an equidigital number, since it uses as much as digits as its factorization.

27992087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 27992087 is about 5290.7548610761. The cubic root of 27992087 is about 303.6302891013.

The spelling of 27992087 in words is "twenty-seven million, nine hundred ninety-two thousand, eighty-seven".