11112889 has 4 divisors (see below), whose sum is σ = 11120356. Its totient is φ = 11105424.

The previous prime is 11112859. The next prime is 11112901. The reversal of 11112889 is 98821111.

11112889 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98821111 = 41 ⋅2410271.

It can be written as a sum of positive squares in 2 ways, for example, as 4000000 + 7112889 = 2000^2 + 2667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11112889.

It is not an unprimeable number, because it can be changed into a prime (11112809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654 + ... + 4759.

It is an arithmetic number, because the mean of its divisors is an integer number (2780089).

Almost surely, 2^11112889 is an apocalyptic number.

It is an amenable number.

11112889 is a deficient number, since it is larger than the sum of its proper divisors (7467).

11112889 is an equidigital number, since it uses as much as digits as its factorization.

11112889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7466.

The product of its digits is 1152, while the sum is 31.

The square root of 11112889 is about 3333.6000059995. The cubic root of 11112889 is about 223.1562178334.

The spelling of 11112889 in words is "eleven million, one hundred twelve thousand, eight hundred eighty-nine".