27297089 has 2 divisors, whose sum is σ = 27297090. Its totient is φ = 27297088.

The previous prime is 27297079. The next prime is 27297097. The reversal of 27297089 is 98079272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15737089 + 11560000 = 3967^2 + 3400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27297089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27297079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13648544 + 13648545.

It is an arithmetic number, because the mean of its divisors is an integer number (13648545).

Almost surely, 2^27297089 is an apocalyptic number.

It is an amenable number.

27297089 is a deficient number, since it is larger than the sum of its proper divisors (1).

27297089 is an equidigital number, since it uses as much as digits as its factorization.

27297089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 27297089 is about 5224.6616158370. The cubic root of 27297089 is about 301.0963183694.

The spelling of 27297089 in words is "twenty-seven million, two hundred ninety-seven thousand, eighty-nine".