9947443034789 has 8 divisors (see below), whose sum is σ = 10712917208952. Its totient is φ = 9182009753280.

The previous prime is 9947443034779. The next prime is 9947443034821. The reversal of 9947443034789 is 9874303447499.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47201038564 + 9900241996225 = 217258^2 + 3146465^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-9947443034789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947443034719) 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, 9717002 + ... + 10691819.

It is an arithmetic number, because the mean of its divisors is an integer number (1339114651119).

Almost surely, 2^{9947443034789} is an apocalyptic number.

It is an amenable number.

9947443034789 is a deficient number, since it is larger than the sum of its proper divisors (765474174163).

9947443034789 is a wasteful number, since it uses less digits than its factorization.

9947443034789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20446327.

The product of its (nonzero) digits is 658409472, while the sum is 71.

The spelling of 9947443034789 in words is "nine trillion, nine hundred forty-seven billion, four hundred forty-three million, thirty-four thousand, seven hundred eighty-nine".