9709748809 has 8 divisors (see below), whose sum is σ = 10225931040. Its totient is φ = 9194080896.

The previous prime is 9709748779. The next prime is 9709748813. The reversal of 9709748809 is 9088479079.

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-9709748809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9709748899) 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, 89512 + ... + 165625.

It is an arithmetic number, because the mean of its divisors is an integer number (1278241380).

Almost surely, 2^9709748809 is an apocalyptic number.

It is an amenable number.

9709748809 is a deficient number, since it is larger than the sum of its proper divisors (516182231).

9709748809 is a wasteful number, since it uses less digits than its factorization.

9709748809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257159.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 9709748809 is about 98538.0576680909. The cubic root of 9709748809 is about 2133.3854637950.

The spelling of 9709748809 in words is "nine billion, seven hundred nine million, seven hundred forty-eight thousand, eight hundred nine".