8331009 has 4 divisors (see below), whose sum is σ = 11108016. Its totient is φ = 5554004.

The previous prime is 8331007. The next prime is 8331019. The reversal of 8331009 is 9001338.

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 8331009 - 2¹ = 8331007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8331009.

It is not an unprimeable number, because it can be changed into a prime (8331007) 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, 1388499 + ... + 1388504.

It is an arithmetic number, because the mean of its divisors is an integer number (2777004).

Almost surely, 2^8331009 is an apocalyptic number.

It is an amenable number.

8331009 is a deficient number, since it is larger than the sum of its proper divisors (2777007).

8331009 is a wasteful number, since it uses less digits than its factorization.

8331009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777006.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 8331009 is about 2886.3487315292. The cubic root of 8331009 is about 202.7212153466.

The spelling of 8331009 in words is "eight million, three hundred thirty-one thousand, nine".