539989 has 4 divisors (see below), whose sum is σ = 557440. Its totient is φ = 522540.

The previous prime is 539947. The next prime is 539993. The reversal of 539989 is 989935.

539989 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 539989 - 2¹¹ = 537941 is a prime.

It is a Duffinian number.

539989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539089) 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, 8679 + ... + 8740.

It is an arithmetic number, because the mean of its divisors is an integer number (139360).

2⁵³⁹⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

539989 is a deficient number, since it is larger than the sum of its proper divisors (17451).

539989 is a wasteful number, since it uses less digits than its factorization.

539989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17450.

The product of its digits is 87480, while the sum is 43.

The square root of 539989 is about 734.8394382448. The cubic root of 539989 is about 81.4319755572.

The spelling of 539989 in words is "five hundred thirty-nine thousand, nine hundred eighty-nine".