118489 has 4 divisors (see below), whose sum is σ = 135424. Its totient is φ = 101556.

The previous prime is 118471. The next prime is 118493. The reversal of 118489 is 984811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 118489 - 2⁵ = 118457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118489.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8457 + ... + 8470.

It is an arithmetic number, because the mean of its divisors is an integer number (33856).

2¹¹⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

118489 is a deficient number, since it is larger than the sum of its proper divisors (16935).

118489 is an equidigital number, since it uses as much as digits as its factorization.

118489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16934.

The product of its digits is 2304, while the sum is 31.

The square root of 118489 is about 344.2223118858. Note that the first 3 decimals coincide. The cubic root of 118489 is about 49.1163416251.

The spelling of 118489 in words is "one hundred eighteen thousand, four hundred eighty-nine".