11489 has 2 divisors, whose sum is σ = 11490.
Its totient is φ = 11488.
The previous prime is 11483. The next prime is 11491. The reversal of 11489 is 98411.
11489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 8464 + 3025 = 92^2 + 55^2
It is an emirp because it is prime and its reverse (98411) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 11489 - 212 = 7393 is a prime.
Together with 11491, it forms a pair of twin primes.
It is a Chen prime.
It is a plaindrome in base 10.
It is not a weakly prime, because it can be changed into another prime (11483) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5744 + 5745.
It is an arithmetic number, because the mean of its divisors is an integer number (5745).
211489 is an apocalyptic number.
It is an amenable number.
11489 is a deficient number, since it is larger than the sum of its proper divisors (1).
11489 is an equidigital number, since it uses as much as digits as its factorization.
11489 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 288, while the sum is 23.
The square root of 11489 is about 107.1867529128.
The cubic root of 11489 is about 22.5645880798.
The spelling of 11489 in words is "eleven thousand, four hundred eighty-nine".