27965387 has 2 divisors, whose sum is σ = 27965388. Its totient is φ = 27965386.

The previous prime is 27965369. The next prime is 27965407. The reversal of 27965387 is 78356972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27965387 - 2²⁰ = 26916811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27965347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13982693 + 13982694.

It is an arithmetic number, because the mean of its divisors is an integer number (13982694).

Almost surely, 2^27965387 is an apocalyptic number.

27965387 is a deficient number, since it is larger than the sum of its proper divisors (1).

27965387 is an equidigital number, since it uses as much as digits as its factorization.

27965387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 27965387 is about 5288.2309896600. The cubic root of 27965387 is about 303.5337200524.

The spelling of 27965387 in words is "twenty-seven million, nine hundred sixty-five thousand, three hundred eighty-seven".