11108889 has 27 divisors (see below), whose sum is σ = 17813887.
Its totient is φ = 6666000.
The previous prime is 11108879. The next prime is 11108897. The reversal of 11108889 is 98880111.
The square root of 11108889 is 3333.
It is a perfect power (a square), and thus also a powerful number.
11108889 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., 10673289 + 435600 = 3267^2 + 660^2
It is a de Polignac number, because none of the positive numbers 2k-11108889 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (11108809) by changing a digit.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 109939 + ... + 110039.
Almost surely, 211108889 is an apocalyptic number.
11108889 is the 3333-rd square number.
11108889 is the 1667-th centered octagonal number.
It is an amenable number.
11108889 is a deficient number, since it is larger than the sum of its proper divisors (6704998).
11108889 is a wasteful number, since it uses less digits than its factorization.
11108889 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 230 (or 115 counting only the distinct ones).
The product of its (nonzero) digits is 4608, while the sum is 36.
The cubic root of 11108889 is about 223.1294401583.
Multiplying 11108889 by its sum of digits (36), we get a square (399920004 = 199982).
It can be divided in two parts, 1110 and 8889, that added together give a palindrome (9999).
The spelling of 11108889 in words is "eleven million, one hundred eight thousand, eight hundred eighty-nine".