27891119 has 2 divisors, whose sum is σ = 27891120. Its totient is φ = 27891118.

The previous prime is 27891109. The next prime is 27891121. The reversal of 27891119 is 91119872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27891119 - 2¹² = 27887023 is a prime.

It is a super-2 number, since 2×27891119² = 1555829038144322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 27891121, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27891109) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13945559 + 13945560.

It is an arithmetic number, because the mean of its divisors is an integer number (13945560).

Almost surely, 2^27891119 is an apocalyptic number.

27891119 is a deficient number, since it is larger than the sum of its proper divisors (1).

27891119 is an equidigital number, since it uses as much as digits as its factorization.

27891119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 38.

The square root of 27891119 is about 5281.2043134119. The cubic root of 27891119 is about 303.2647825073.

The spelling of 27891119 in words is "twenty-seven million, eight hundred ninety-one thousand, one hundred nineteen".