9720000001 has 8 divisors (see below), whose sum is σ = 9764404200. Its totient is φ = 9675657600.

The previous prime is 9719999959. The next prime is 9720000007. The reversal of 9720000001 is 1000000279.

It can be written as a sum of positive squares in 4 ways, for example, as 560552976 + 9159447025 = 23676^2 + 95705^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9720000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9720000007) 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, 315901 + ... + 345301.

It is an arithmetic number, because the mean of its divisors is an integer number (1220550525).

Almost surely, 2^9720000001 is an apocalyptic number.

It is an amenable number.

9720000001 is a deficient number, since it is larger than the sum of its proper divisors (44404199).

9720000001 is a wasteful number, since it uses less digits than its factorization.

9720000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30899.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 9720000001 is about 98590.0603560014. The cubic root of 9720000001 is about 2134.1359827672.

The spelling of 9720000001 in words is "nine billion, seven hundred twenty million, one", and thus it is an aban number.