539845 has 8 divisors (see below), whose sum is σ = 654840. Its totient is φ = 427200.

The previous prime is 539843. The next prime is 539849. The reversal of 539845 is 548935.

It can be written as a sum of positive squares in 4 ways, for example, as 171396 + 368449 = 414^2 + 607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 539845 - 2¹ = 539843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 539845.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 30 + ... + 1039.

It is an arithmetic number, because the mean of its divisors is an integer number (81855).

2⁵³⁹⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

539845 is a deficient number, since it is larger than the sum of its proper divisors (114995).

539845 is a wasteful number, since it uses less digits than its factorization.

539845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

The product of its digits is 21600, while the sum is 34.

The square root of 539845 is about 734.7414511241. The cubic root of 539845 is about 81.4247363684.

The spelling of 539845 in words is "five hundred thirty-nine thousand, eight hundred forty-five".