2569009 has 4 divisors (see below), whose sum is σ = 2704240. Its totient is φ = 2433780.

The previous prime is 2569003. The next prime is 2569013. The reversal of 2569009 is 9009652.

2569009 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 2569009 - 2⁹ = 2568497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2569003) 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, 67587 + ... + 67624.

It is an arithmetic number, because the mean of its divisors is an integer number (676060).

2^2569009 is an apocalyptic number.

It is an amenable number.

2569009 is a deficient number, since it is larger than the sum of its proper divisors (135231).

2569009 is a wasteful number, since it uses less digits than its factorization.

2569009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135230.

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

The square root of 2569009 is about 1602.8128399785. The cubic root of 2569009 is about 136.9583584171.

The spelling of 2569009 in words is "two million, five hundred sixty-nine thousand, nine".