9943394706 has 64 divisors (see below), whose sum is σ = 25287413760. Its totient is φ = 2837106000.

The previous prime is 9943394701. The next prime is 9943394719. The reversal of 9943394706 is 6074933499.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (9943394701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266365 + ... + 301391.

It is an arithmetic number, because the mean of its divisors is an integer number (395115840).

Almost surely, 2^9943394706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9943394706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12643706880).

9943394706 is an abundant number, since it is smaller than the sum of its proper divisors (15344019054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9943394706 is a wasteful number, since it uses less digits than its factorization.

9943394706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35796 (or 35790 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 54.

The square root of 9943394706 is about 99716.5718724827. The cubic root of 9943394706 is about 2150.3619153499.

The spelling of 9943394706 in words is "nine billion, nine hundred forty-three million, three hundred ninety-four thousand, seven hundred six".