5809609 has 4 divisors (see below), whose sum is σ = 6256516. Its totient is φ = 5362704.

The previous prime is 5809607. The next prime is 5809613. The reversal of 5809609 is 9069085.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9069085 = 5 ⋅1813817.

It can be written as a sum of positive squares in 2 ways, for example, as 3240000 + 2569609 = 1800^2 + 1603^2 .

It is a cyclic number.

It is not a de Polignac number, because 5809609 - 2¹ = 5809607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5809607) 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, 223434 + ... + 223459.

It is an arithmetic number, because the mean of its divisors is an integer number (1564129).

Almost surely, 2^5809609 is an apocalyptic number.

It is an amenable number.

5809609 is a deficient number, since it is larger than the sum of its proper divisors (446907).

5809609 is a wasteful number, since it uses less digits than its factorization.

5809609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446906.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 5809609 is about 2410.3130502074. The cubic root of 5809609 is about 179.7693444774.

The spelling of 5809609 in words is "five million, eight hundred nine thousand, six hundred nine".