9321072009 has 16 divisors (see below), whose sum is σ = 12456894912. Its totient is φ = 6199668288.

The previous prime is 9321071887. The next prime is 9321072037. The reversal of 9321072009 is 9002701239.

It is not a de Polignac number, because 9321072009 - 2⁹ = 9321071497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9321072049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3472782 + ... + 3475464.

It is an arithmetic number, because the mean of its divisors is an integer number (778555932).

Almost surely, 2^9321072009 is an apocalyptic number.

It is an amenable number.

9321072009 is a deficient number, since it is larger than the sum of its proper divisors (3135822903).

9321072009 is a wasteful number, since it uses less digits than its factorization.

9321072009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 9321072009 is about 96545.6990704402. The cubic root of 9321072009 is about 2104.5308078764.

The spelling of 9321072009 in words is "nine billion, three hundred twenty-one million, seventy-two thousand, nine".