27387439 has 2 divisors, whose sum is σ = 27387440. Its totient is φ = 27387438.

The previous prime is 27387433. The next prime is 27387443. The reversal of 27387439 is 93478372.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27387439 - 2⁹ = 27386927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27387395 and 27387404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27387433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13693719 + 13693720.

It is an arithmetic number, because the mean of its divisors is an integer number (13693720).

Almost surely, 2^27387439 is an apocalyptic number.

27387439 is a deficient number, since it is larger than the sum of its proper divisors (1).

27387439 is an equidigital number, since it uses as much as digits as its factorization.

27387439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The square root of 27387439 is about 5233.3009659296. The cubic root of 27387439 is about 301.4281497650.

The spelling of 27387439 in words is "twenty-seven million, three hundred eighty-seven thousand, four hundred thirty-nine".