8811609 has 4 divisors (see below), whose sum is σ = 11748816. Its totient is φ = 5874404.

The previous prime is 8811601. The next prime is 8811631. The reversal of 8811609 is 9061188.

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 8811609 - 2³ = 8811601 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8811609.

It is not an unprimeable number, because it can be changed into a prime (8811601) 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, 1468599 + ... + 1468604.

It is an arithmetic number, because the mean of its divisors is an integer number (2937204).

Almost surely, 2^8811609 is an apocalyptic number.

It is an amenable number.

8811609 is a deficient number, since it is larger than the sum of its proper divisors (2937207).

8811609 is a wasteful number, since it uses less digits than its factorization.

8811609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937206.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 8811609 is about 2968.4354464937. The cubic root of 8811609 is about 206.5467691068.

The spelling of 8811609 in words is "eight million, eight hundred eleven thousand, six hundred nine".