27938279 has 2 divisors, whose sum is σ = 27938280. Its totient is φ = 27938278.

The previous prime is 27938269. The next prime is 27938357. The reversal of 27938279 is 97283972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27938279 - 2⁸ = 27938023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27938269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13969139 + 13969140.

It is an arithmetic number, because the mean of its divisors is an integer number (13969140).

Almost surely, 2^27938279 is an apocalyptic number.

27938279 is a deficient number, since it is larger than the sum of its proper divisors (1).

27938279 is an equidigital number, since it uses as much as digits as its factorization.

27938279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 47.

The square root of 27938279 is about 5285.6673183241. The cubic root of 27938279 is about 303.4356124386.

The spelling of 27938279 in words is "twenty-seven million, nine hundred thirty-eight thousand, two hundred seventy-nine".