9909839673 has 16 divisors (see below), whose sum is σ = 14683137600. Its totient is φ = 6605707680.

The previous prime is 9909839663. The next prime is 9909839677. The reversal of 9909839673 is 3769389099.

9909839673 is a `hidden beast` number, since 9 + 90 + 98 + 396 + 73 = 666.

9909839673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9909839673 - 2¹² = 9909835577 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9909839673.

It is not an unprimeable number, because it can be changed into a prime (9909839677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244978 + ... + 282548.

It is an arithmetic number, because the mean of its divisors is an integer number (917696100).

Almost surely, 2^9909839673 is an apocalyptic number.

It is an amenable number.

9909839673 is a deficient number, since it is larger than the sum of its proper divisors (4773297927).

9909839673 is a wasteful number, since it uses less digits than its factorization.

9909839673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47349 (or 47343 counting only the distinct ones).

The product of its (nonzero) digits is 19840464, while the sum is 63.

The square root of 9909839673 is about 99548.1776478103. The cubic root of 9909839673 is about 2147.9403150452.

The spelling of 9909839673 in words is "nine billion, nine hundred nine million, eight hundred thirty-nine thousand, six hundred seventy-three".