11712289 has 2 divisors, whose sum is σ = 11712290. Its totient is φ = 11712288.

The previous prime is 11712287. The next prime is 11712299. The reversal of 11712289 is 98221711.

11712289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8025889 + 3686400 = 2833^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 11712289 - 2¹ = 11712287 is a prime.

Together with 11712287, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11712289.

It is not a weakly prime, because it can be changed into another prime (11712287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5856144 + 5856145.

It is an arithmetic number, because the mean of its divisors is an integer number (5856145).

Almost surely, 2^11712289 is an apocalyptic number.

It is an amenable number.

11712289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11712289 is an equidigital number, since it uses as much as digits as its factorization.

11712289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 31.

The square root of 11712289 is about 3422.3221648466. The cubic root of 11712289 is about 227.0983227282.

The spelling of 11712289 in words is "eleven million, seven hundred twelve thousand, two hundred eighty-nine".