8559009 has 6 divisors (see below), whose sum is σ = 12363026. Its totient is φ = 5706000.

The previous prime is 8558999. The next prime is 8559011. The reversal of 8559009 is 9009558.

8559009 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4397409 + 4161600 = 2097^2 + 2040^2 .

It is not a de Polignac number, because 8559009 - 2⁷ = 8558881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8559079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 475492 + ... + 475509.

Almost surely, 2^8559009 is an apocalyptic number.

It is an amenable number.

8559009 is a deficient number, since it is larger than the sum of its proper divisors (3804017).

8559009 is a wasteful number, since it uses less digits than its factorization.

8559009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951007 (or 951004 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 8559009 is about 2925.5784043502. The cubic root of 8559009 is about 204.5539299384.

The spelling of 8559009 in words is "eight million, five hundred fifty-nine thousand, nine".