8867409 has 4 divisors (see below), whose sum is σ = 11823216. Its totient is φ = 5911604.

The previous prime is 8867399. The next prime is 8867423. The reversal of 8867409 is 9047688.

It is a happy number.

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 8867409 - 2⁴ = 8867393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8867429) 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, 1477899 + ... + 1477904.

It is an arithmetic number, because the mean of its divisors is an integer number (2955804).

Almost surely, 2^8867409 is an apocalyptic number.

It is an amenable number.

8867409 is a deficient number, since it is larger than the sum of its proper divisors (2955807).

8867409 is a wasteful number, since it uses less digits than its factorization.

8867409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955806.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8867409 is about 2977.8195042682. The cubic root of 8867409 is about 206.9818416240.

The spelling of 8867409 in words is "eight million, eight hundred sixty-seven thousand, four hundred nine".