539444 has 12 divisors (see below), whose sum is σ = 999684. Its totient is φ = 253824.

The previous prime is 539401. The next prime is 539447. The reversal of 539444 is 444935.

It can be written as a sum of positive squares in 2 ways, for example, as 289444 + 250000 = 538^2 + 500^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 539444.

It is not an unprimeable number, because it can be changed into a prime (539447) by changing a digit.

539444 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 3 ways as a sum of consecutive naturals, for example, 3899 + ... + 4034.

It is an arithmetic number, because the mean of its divisors is an integer number (83307).

2⁵³⁹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

539444 is a deficient number, since it is larger than the sum of its proper divisors (460240).

539444 is a wasteful number, since it uses less digits than its factorization.

539444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7954 (or 7952 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 539444 is about 734.4685153225. The cubic root of 539444 is about 81.4045704521.

The spelling of 539444 in words is "five hundred thirty-nine thousand, four hundred forty-four".