118439 has 4 divisors (see below), whose sum is σ = 125424. Its totient is φ = 111456.

The previous prime is 118429. The next prime is 118453. The reversal of 118439 is 934811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118439 - 2⁴ = 118423 is a prime.

It is a Duffinian number.

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, 3467 + ... + 3500.

It is an arithmetic number, because the mean of its divisors is an integer number (31356).

2¹¹⁸⁴³⁹ is an apocalyptic number.

118439 is a deficient number, since it is larger than the sum of its proper divisors (6985).

118439 is an equidigital number, since it uses as much as digits as its factorization.

118439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6984.

The product of its digits is 864, while the sum is 26.

The square root of 118439 is about 344.1496767396. The cubic root of 118439 is about 49.1094319468.

It can be divided in two parts, 11 and 8439, that multiplied together give a palindrome (92829).

The spelling of 118439 in words is "one hundred eighteen thousand, four hundred thirty-nine".