539844 has 12 divisors (see below), whose sum is σ = 1259664. Its totient is φ = 179944.

The previous prime is 539843. The next prime is 539849. The reversal of 539844 is 448935.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (539843) 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, 22482 + ... + 22505.

It is an arithmetic number, because the mean of its divisors is an integer number (104972).

2⁵³⁹⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

539844 is an abundant number, since it is smaller than the sum of its proper divisors (719820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

539844 is a wasteful number, since it uses less digits than its factorization.

539844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44994 (or 44992 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 539844 is about 734.7407706123. The cubic root of 539844 is about 81.4246860917.

Subtracting from 539844 its reverse (448935), we obtain a palindrome (90909).

The spelling of 539844 in words is "five hundred thirty-nine thousand, eight hundred forty-four".