118889 has 4 divisors (see below), whose sum is σ = 120900. Its totient is φ = 116880.

The previous prime is 118873. The next prime is 118891. The reversal of 118889 is 988811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988811 = 379 ⋅2609.

It can be written as a sum of positive squares in 2 ways, for example, as 43264 + 75625 = 208^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 118889 - 2⁴ = 118873 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (118819) 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, 914 + ... + 1035.

It is an arithmetic number, because the mean of its divisors is an integer number (30225).

2¹¹⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

118889 is a deficient number, since it is larger than the sum of its proper divisors (2011).

118889 is an equidigital number, since it uses as much as digits as its factorization.

118889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010.

The product of its digits is 4608, while the sum is 35.

The square root of 118889 is about 344.8028422157. The cubic root of 118889 is about 49.1715491975.

It can be divided in two parts, 11 and 8889, that multiplied together give a palindrome (97779).

The spelling of 118889 in words is "one hundred eighteen thousand, eight hundred eighty-nine".