539831 has 4 divisors (see below), whose sum is σ = 541464. Its totient is φ = 538200.

The previous prime is 539797. The next prime is 539837. The reversal of 539831 is 138935.

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

It is a cyclic number.

It is not a de Polignac number, because 539831 - 2¹⁸ = 277687 is a prime.

It is a super-2 number, since 2×539831² = 582835017122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 539794 and 539803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 1046.

It is an arithmetic number, because the mean of its divisors is an integer number (135366).

2⁵³⁹⁸³¹ is an apocalyptic number.

539831 is a deficient number, since it is larger than the sum of its proper divisors (1633).

539831 is a wasteful number, since it uses less digits than its factorization.

539831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632.

The product of its digits is 3240, while the sum is 29.

The square root of 539831 is about 734.7319239015. The cubic root of 539831 is about 81.4240324897.

The spelling of 539831 in words is "five hundred thirty-nine thousand, eight hundred thirty-one".