27985387 has 2 divisors, whose sum is σ = 27985388. Its totient is φ = 27985386.

The previous prime is 27985381. The next prime is 27985393. The reversal of 27985387 is 78358972.

It is a balanced prime because it is at equal distance from previous prime (27985381) and next prime (27985393).

It is a cyclic number.

It is not a de Polignac number, because 27985387 - 2⁷ = 27985259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27985387.

It is not a weakly prime, because it can be changed into another prime (27985381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13992693 + 13992694.

It is an arithmetic number, because the mean of its divisors is an integer number (13992694).

Almost surely, 2^27985387 is an apocalyptic number.

27985387 is a deficient number, since it is larger than the sum of its proper divisors (1).

27985387 is an equidigital number, since it uses as much as digits as its factorization.

27985387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 27985387 is about 5290.1216432139. The cubic root of 27985387 is about 303.6060621919.

The spelling of 27985387 in words is "twenty-seven million, nine hundred eighty-five thousand, three hundred eighty-seven".