27639089 has 2 divisors, whose sum is σ = 27639090. Its totient is φ = 27639088.

The previous prime is 27639061. The next prime is 27639097. The reversal of 27639089 is 98093672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20322064 + 7317025 = 4508^2 + 2705^2 .

It is a cyclic number.

It is not a de Polignac number, because 27639089 - 2⁸ = 27638833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27630089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13819544 + 13819545.

It is an arithmetic number, because the mean of its divisors is an integer number (13819545).

Almost surely, 2^27639089 is an apocalyptic number.

It is an amenable number.

27639089 is a deficient number, since it is larger than the sum of its proper divisors (1).

27639089 is an equidigital number, since it uses as much as digits as its factorization.

27639089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 27639089 is about 5257.2891303408. The cubic root of 27639089 is about 302.3485624989.

The spelling of 27639089 in words is "twenty-seven million, six hundred thirty-nine thousand, eighty-nine".