27027289 has 2 divisors, whose sum is σ = 27027290. Its totient is φ = 27027288.

The previous prime is 27027283. The next prime is 27027293. The reversal of 27027289 is 98272072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22165264 + 4862025 = 4708^2 + 2205^2 .

It is a cyclic number.

It is not a de Polignac number, because 27027289 - 2⁹ = 27026777 is a prime.

It is not a weakly prime, because it can be changed into another prime (27027283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13513644 + 13513645.

It is an arithmetic number, because the mean of its divisors is an integer number (13513645).

Almost surely, 2^27027289 is an apocalyptic number.

It is an amenable number.

27027289 is a deficient number, since it is larger than the sum of its proper divisors (1).

27027289 is an equidigital number, since it uses as much as digits as its factorization.

27027289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 27027289 is about 5198.7776447931. Note that the first 3 decimals coincide. The cubic root of 27027289 is about 300.1010363387.

The spelling of 27027289 in words is "twenty-seven million, twenty-seven thousand, two hundred eighty-nine".