11889 has 6 divisors (see below), whose sum is σ = 17186. Its totient is φ = 7920.

The previous prime is 11887. The next prime is 11897. The reversal of 11889 is 98811.

11889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11664 + 225 = 108^2 + 15^2 .

It is not a de Polignac number, because 11889 - 2¹ = 11887 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 652 + ... + 669.

2¹¹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

11889 is a deficient number, since it is larger than the sum of its proper divisors (5297).

11889 is a wasteful number, since it uses less digits than its factorization.

11889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1324 counting only the distinct ones).

The product of its digits is 576, while the sum is 27.

The square root of 11889 is about 109.0366910723. The cubic root of 11889 is about 22.8234753593.

It can be divided in two parts, 11 and 889, that multiplied together give a palindrome (9779).

The spelling of 11889 in words is "eleven thousand, eight hundred eighty-nine".