8247009 has 8 divisors (see below), whose sum is σ = 11075680. Its totient is φ = 5458176.

The previous prime is 8246993. The next prime is 8247077. The reversal of 8247009 is 9007428.

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

It is not a de Polignac number, because 8247009 - 2⁴ = 8246993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8247089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9472 + ... + 10305.

It is an arithmetic number, because the mean of its divisors is an integer number (1384460).

Almost surely, 2^8247009 is an apocalyptic number.

It is an amenable number.

8247009 is a deficient number, since it is larger than the sum of its proper divisors (2828671).

8247009 is a wasteful number, since it uses less digits than its factorization.

8247009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19919.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 8247009 is about 2871.7606098002. The cubic root of 8247009 is about 202.0375791929.

The spelling of 8247009 in words is "eight million, two hundred forty-seven thousand, nine".