9794738719947 has 18 divisors (see below), whose sum is σ = 13079420144892. Its totient is φ = 6519956487264.

The previous prime is 9794738719921. The next prime is 9794738720057. The reversal of 9794738719947 is 7499178374979.

It is not a de Polignac number, because 9794738719947 - 2¹⁵ = 9794738687179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9794738719947.

It is not an unprimeable number, because it can be changed into a prime (9794738719247) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6087468879 + ... + 6087470487.

It is an arithmetic number, because the mean of its divisors is an integer number (726634452494).

Almost surely, 2^{9794738719947} is an apocalyptic number.

9794738719947 is a deficient number, since it is larger than the sum of its proper divisors (3284681424945).

9794738719947 is an frugal number, since it uses more digits than its factorization.

9794738719947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467 (or 2735 counting only the distinct ones).

The product of its digits is 6049137024, while the sum is 84.

The spelling of 9794738719947 in words is "nine trillion, seven hundred ninety-four billion, seven hundred thirty-eight million, seven hundred nineteen thousand, nine hundred forty-seven".