539987 has 4 divisors (see below), whose sum is σ = 617136. Its totient is φ = 462840.

The previous prime is 539947. The next prime is 539993. The reversal of 539987 is 789935.

539987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 539987 - 2¹⁴ = 523603 is a prime.

It is a super-3 number, since 3×539987³ = 472357883621333409, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539947) 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, 38564 + ... + 38577.

It is an arithmetic number, because the mean of its divisors is an integer number (154284).

2⁵³⁹⁹⁸⁷ is an apocalyptic number.

539987 is a deficient number, since it is larger than the sum of its proper divisors (77149).

539987 is an equidigital number, since it uses as much as digits as its factorization.

539987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77148.

The product of its digits is 68040, while the sum is 41.

The square root of 539987 is about 734.8380774021. The cubic root of 539987 is about 81.4318750217.

The spelling of 539987 in words is "five hundred thirty-nine thousand, nine hundred eighty-seven".