11117889 has 6 divisors (see below), whose sum is σ = 16059186. Its totient is φ = 7411920.

The previous prime is 11117857. The next prime is 11117893. The reversal of 11117889 is 98871111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5919489 + 5198400 = 2433^2 + 2280^2 .

It is not a de Polignac number, because 11117889 - 2⁵ = 11117857 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11117789) 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, 617652 + ... + 617669.

It is an arithmetic number, because the mean of its divisors is an integer number (2676531).

Almost surely, 2^11117889 is an apocalyptic number.

It is an amenable number.

11117889 is a deficient number, since it is larger than the sum of its proper divisors (4941297).

11117889 is a wasteful number, since it uses less digits than its factorization.

11117889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235327 (or 1235324 counting only the distinct ones).

The product of its digits is 4032, while the sum is 36.

The square root of 11117889 is about 3334.3498616672. The cubic root of 11117889 is about 223.1896808926.

The spelling of 11117889 in words is "eleven million, one hundred seventeen thousand, eight hundred eighty-nine".