118447 has 4 divisors (see below), whose sum is σ = 135376. Its totient is φ = 101520.

The previous prime is 118429. The next prime is 118453. The reversal of 118447 is 744811.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118447 is a prime.

It is a Duffinian number.

118447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118457) 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, 8454 + ... + 8467.

It is an arithmetic number, because the mean of its divisors is an integer number (33844).

2¹¹⁸⁴⁴⁷ is an apocalyptic number.

118447 is a deficient number, since it is larger than the sum of its proper divisors (16929).

118447 is an equidigital number, since it uses as much as digits as its factorization.

118447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16928.

The product of its digits is 896, while the sum is 25.

The square root of 118447 is about 344.1612993932. The cubic root of 118447 is about 49.1105376260.

It can be divided in two parts, 118 and 447, that added together give a palindrome (565).

The spelling of 118447 in words is "one hundred eighteen thousand, four hundred forty-seven".