9685009 has 4 divisors (see below), whose sum is σ = 9946804. Its totient is φ = 9423216.

The previous prime is 9685007. The next prime is 9685033. The reversal of 9685009 is 9005869.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6390784 + 3294225 = 2528^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 9685009 - 2¹ = 9685007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 261757 = 9685009 / (9 + 6 + 8 + 5 + 0 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9685007) 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, 130842 + ... + 130915.

It is an arithmetic number, because the mean of its divisors is an integer number (2486701).

Almost surely, 2^9685009 is an apocalyptic number.

It is an amenable number.

9685009 is a deficient number, since it is larger than the sum of its proper divisors (261795).

9685009 is a wasteful number, since it uses less digits than its factorization.

9685009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261794.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 9685009 is about 3112.0747099001. The cubic root of 9685009 is about 213.1572013561.

The spelling of 9685009 in words is "nine million, six hundred eighty-five thousand, nine".