8809909 has 4 divisors (see below), whose sum is σ = 8817120. Its totient is φ = 8802700.

The previous prime is 8809903. The next prime is 8809919. The reversal of 8809909 is 9099088.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8809909 - 2⁵ = 8809877 is a prime.

It is a super-2 number, since 2×8809909² = 155228993176562, which contains 22 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 (8809903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267 + ... + 4384.

It is an arithmetic number, because the mean of its divisors is an integer number (2204280).

Almost surely, 2^8809909 is an apocalyptic number.

It is an amenable number.

8809909 is a deficient number, since it is larger than the sum of its proper divisors (7211).

8809909 is a wasteful number, since it uses less digits than its factorization.

8809909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7210.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 8809909 is about 2968.1490865521. The cubic root of 8809909 is about 206.5334854152.

The spelling of 8809909 in words is "eight million, eight hundred nine thousand, nine hundred nine".