27947 has 2 divisors, whose sum is σ = 27948. Its totient is φ = 27946.

The previous prime is 27943. The next prime is 27953. The reversal of 27947 is 74972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27947 - 2² = 27943 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (27941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13973 + 13974.

It is an arithmetic number, because the mean of its divisors is an integer number (13974).

2²⁷⁹⁴⁷ is an apocalyptic number.

27947 is a deficient number, since it is larger than the sum of its proper divisors (1).

27947 is an equidigital number, since it uses as much as digits as its factorization.

27947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 27947 is about 167.1735625032. The cubic root of 27947 is about 30.3467181869.

The spelling of 27947 in words is "twenty-seven thousand, nine hundred forty-seven".