539873 has 4 divisors (see below), whose sum is σ = 542100. Its totient is φ = 537648.

The previous prime is 539863. The next prime is 539881. The reversal of 539873 is 378935.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378935 = 5 ⋅75787.

It can be written as a sum of positive squares in 2 ways, for example, as 262144 + 277729 = 512^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 539873 - 2¹⁴ = 523489 is a prime.

It is a super-2 number, since 2×539873² = 582925712258, which contains 22 as substring.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 698 + ... + 1251.

It is an arithmetic number, because the mean of its divisors is an integer number (135525).

2⁵³⁹⁸⁷³ is an apocalyptic number.

It is an amenable number.

539873 is a deficient number, since it is larger than the sum of its proper divisors (2227).

539873 is a wasteful number, since it uses less digits than its factorization.

539873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226.

The product of its digits is 22680, while the sum is 35.

The square root of 539873 is about 734.7605051988. The cubic root of 539873 is about 81.4261440892.

The spelling of 539873 in words is "five hundred thirty-nine thousand, eight hundred seventy-three".