12027289 has 2 divisors, whose sum is σ = 12027290. Its totient is φ = 12027288.

The previous prime is 12027277. The next prime is 12027293. The reversal of 12027289 is 98272021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 501264 = 3395^2 + 708^2 .

It is an emirp because it is prime and its reverse (98272021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12027289 - 2¹³ = 12019097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12027289.

It is not a weakly prime, because it can be changed into another prime (12027089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6013644 + 6013645.

It is an arithmetic number, because the mean of its divisors is an integer number (6013645).

Almost surely, 2^12027289 is an apocalyptic number.

It is an amenable number.

12027289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12027289 is an equidigital number, since it uses as much as digits as its factorization.

12027289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12027289 is about 3468.0382062486. The cubic root of 12027289 is about 229.1162621633.

The spelling of 12027289 in words is "twelve million, twenty-seven thousand, two hundred eighty-nine".