8866409 has 8 divisors (see below), whose sum is σ = 9186048. Its totient is φ = 8552320.

The previous prime is 8866399. The next prime is 8866427. The reversal of 8866409 is 9046688.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8866409 is a prime.

It is a super-2 number, since 2×8866409² = 157226417110562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8866439) 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 7 ways as a sum of consecutive naturals, for example, 2009 + ... + 4665.

It is an arithmetic number, because the mean of its divisors is an integer number (1148256).

Almost surely, 2^8866409 is an apocalyptic number.

It is an amenable number.

8866409 is a deficient number, since it is larger than the sum of its proper divisors (319639).

8866409 is a wasteful number, since it uses less digits than its factorization.

8866409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 8866409 is about 2977.6515914391. The cubic root of 8866409 is about 206.9740607107.

The spelling of 8866409 in words is "eight million, eight hundred sixty-six thousand, four hundred nine".