8900009 has 4 divisors (see below), whose sum is σ = 8968080. Its totient is φ = 8831940.

The previous prime is 8899997. The next prime is 8900029. The reversal of 8900009 is 9000098.

It is a happy number.

8900009 is nontrivially palindromic in base 13.

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 an emirpimes, since its reverse is a distinct semiprime: 9000098 = 2 ⋅4500049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8900009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8900029) 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, 33839 + ... + 34100.

It is an arithmetic number, because the mean of its divisors is an integer number (2242020).

Almost surely, 2^8900009 is an apocalyptic number.

It is an amenable number.

8900009 is a deficient number, since it is larger than the sum of its proper divisors (68071).

8900009 is a wasteful number, since it uses less digits than its factorization.

8900009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68070.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 8900009 is about 2983.2882864383. The cubic root of 8900009 is about 207.2351796604.

The spelling of 8900009 in words is "eight million, nine hundred thousand, nine".