844018 has 24 divisors (see below), whose sum is σ = 1536192. Its totient is φ = 340632.

The previous prime is 844013. The next prime is 844043. The reversal of 844018 is 810448.

844018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 843983 and 844001.

It is not an unprimeable number, because it can be changed into a prime (844013) by changing a digit.

844018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4971 + ... + 5137.

It is an arithmetic number, because the mean of its divisors is an integer number (64008).

2⁸⁴⁴⁰¹⁸ is an apocalyptic number.

844018 is a deficient number, since it is larger than the sum of its proper divisors (692174).

844018 is a wasteful number, since it uses less digits than its factorization.

844018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 844018 is about 918.7045226840. The cubic root of 844018 is about 94.5040823894.

The spelling of 844018 in words is "eight hundred forty-four thousand, eighteen".