27855983 has 2 divisors, whose sum is σ = 27855984. Its totient is φ = 27855982.

The previous prime is 27855929. The next prime is 27855991. The reversal of 27855983 is 38955872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27855983 - 2⁸ = 27855727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27855923) 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, 13927991 + 13927992.

It is an arithmetic number, because the mean of its divisors is an integer number (13927992).

Almost surely, 2^27855983 is an apocalyptic number.

27855983 is a deficient number, since it is larger than the sum of its proper divisors (1).

27855983 is an equidigital number, since it uses as much as digits as its factorization.

27855983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 47.

The square root of 27855983 is about 5277.8767511188. The cubic root of 27855983 is about 303.1373824679.

The spelling of 27855983 in words is "twenty-seven million, eight hundred fifty-five thousand, nine hundred eighty-three".