539689 has 4 divisors (see below), whose sum is σ = 547156. Its totient is φ = 532224.

The previous prime is 539687. The next prime is 539711. The reversal of 539689 is 986935.

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

It can be written as a sum of positive squares in 2 ways, for example, as 189225 + 350464 = 435^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 539689 - 2¹ = 539687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539687) 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, 3624 + ... + 3769.

It is an arithmetic number, because the mean of its divisors is an integer number (136789).

2⁵³⁹⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

539689 is a deficient number, since it is larger than the sum of its proper divisors (7467).

539689 is an equidigital number, since it uses as much as digits as its factorization.

539689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7466.

The product of its digits is 58320, while the sum is 40.

The square root of 539689 is about 734.6352836612. The cubic root of 539689 is about 81.4168924609.

The spelling of 539689 in words is "five hundred thirty-nine thousand, six hundred eighty-nine".