27825439 has 2 divisors, whose sum is σ = 27825440. Its totient is φ = 27825438.

The previous prime is 27825431. The next prime is 27825449. The reversal of 27825439 is 93452872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27825439 - 2³ = 27825431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27825431) 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, 13912719 + 13912720.

It is an arithmetic number, because the mean of its divisors is an integer number (13912720).

Almost surely, 2^27825439 is an apocalyptic number.

27825439 is a deficient number, since it is larger than the sum of its proper divisors (1).

27825439 is an equidigital number, since it uses as much as digits as its factorization.

27825439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 27825439 is about 5274.9823696388. The cubic root of 27825439 is about 303.0265455436.

The spelling of 27825439 in words is "twenty-seven million, eight hundred twenty-five thousand, four hundred thirty-nine".