27288139 has 2 divisors, whose sum is σ = 27288140. Its totient is φ = 27288138.

The previous prime is 27288133. The next prime is 27288181. The reversal of 27288139 is 93188272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27288139 - 2¹³ = 27279947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27288133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13644069 + 13644070.

It is an arithmetic number, because the mean of its divisors is an integer number (13644070).

Almost surely, 2^27288139 is an apocalyptic number.

27288139 is a deficient number, since it is larger than the sum of its proper divisors (1).

27288139 is an equidigital number, since it uses as much as digits as its factorization.

27288139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 27288139 is about 5223.8050308181. The cubic root of 27288139 is about 301.0634075754.

The spelling of 27288139 in words is "twenty-seven million, two hundred eighty-eight thousand, one hundred thirty-nine".