27944219 has 2 divisors, whose sum is σ = 27944220. Its totient is φ = 27944218.

The previous prime is 27944167. The next prime is 27944233. The reversal of 27944219 is 91244972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27944219 - 2²⁰ = 26895643 is a prime.

It is a super-2 number, since 2×27944219² = 1561758751039922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27944249) 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, 13972109 + 13972110.

It is an arithmetic number, because the mean of its divisors is an integer number (13972110).

Almost surely, 2^27944219 is an apocalyptic number.

27944219 is a deficient number, since it is larger than the sum of its proper divisors (1).

27944219 is an equidigital number, since it uses as much as digits as its factorization.

27944219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 27944219 is about 5286.2291853456. The cubic root of 27944219 is about 303.4571155505.

The spelling of 27944219 in words is "twenty-seven million, nine hundred forty-four thousand, two hundred nineteen".