259609 has 4 divisors (see below), whose sum is σ = 296704. Its totient is φ = 222516.

The previous prime is 259603. The next prime is 259619. The reversal of 259609 is 906952.

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 not a de Polignac number, because 259609 - 2⁵ = 259577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18537 + ... + 18550.

It is an arithmetic number, because the mean of its divisors is an integer number (74176).

2²⁵⁹⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

259609 is a deficient number, since it is larger than the sum of its proper divisors (37095).

259609 is an equidigital number, since it uses as much as digits as its factorization.

259609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37094.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 259609 is about 509.5184000603. The cubic root of 259609 is about 63.7930325885.

It can be divided in two parts, 259 and 609, that added together give a palindrome (868).

The spelling of 259609 in words is "two hundred fifty-nine thousand, six hundred nine".