8815009 has 4 divisors (see below), whose sum is σ = 10074304. Its totient is φ = 7555716.

The previous prime is 8815007. The next prime is 8815021. The reversal of 8815009 is 9005188.

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 not a de Polignac number, because 8815009 - 2¹ = 8815007 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8815007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629637 + ... + 629650.

It is an arithmetic number, because the mean of its divisors is an integer number (2518576).

Almost surely, 2^8815009 is an apocalyptic number.

It is an amenable number.

8815009 is a deficient number, since it is larger than the sum of its proper divisors (1259295).

8815009 is a wasteful number, since it uses less digits than its factorization.

8815009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259294.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 8815009 is about 2969.0080835188. The cubic root of 8815009 is about 206.5733313654.

The spelling of 8815009 in words is "eight million, eight hundred fifteen thousand, nine".