559909 has 4 divisors (see below), whose sum is σ = 639904. Its totient is φ = 479916.

The previous prime is 559907. The next prime is 559913. The reversal of 559909 is 909955.

It is a happy number.

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 559909 - 2¹ = 559907 is a prime.

It is a super-3 number, since 3×559909³ = 526591203333979287, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (559901) 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, 39987 + ... + 40000.

It is an arithmetic number, because the mean of its divisors is an integer number (159976).

2⁵⁵⁹⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

559909 is a deficient number, since it is larger than the sum of its proper divisors (79995).

559909 is an equidigital number, since it uses as much as digits as its factorization.

559909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79994.

The product of its (nonzero) digits is 18225, while the sum is 37.

The square root of 559909 is about 748.2706729520. The cubic root of 559909 is about 82.4212410286.

The spelling of 559909 in words is "five hundred fifty-nine thousand, nine hundred nine".