9729944 has 32 divisors (see below), whose sum is σ = 20956320. Its totient is φ = 4148736.

The previous prime is 9729931. The next prime is 9729947. The reversal of 9729944 is 4499279.

9729944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9729895 and 9729904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729947) 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, 16112 + ... + 16704.

It is an arithmetic number, because the mean of its divisors is an integer number (654885).

Almost surely, 2^9729944 is an apocalyptic number.

It is an amenable number.

9729944 is an abundant number, since it is smaller than the sum of its proper divisors (11226376).

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

9729944 is a wasteful number, since it uses less digits than its factorization.

9729944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 895 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 9729944 is about 3119.2858156956. The cubic root of 9729944 is about 213.4863507226.

The spelling of 9729944 in words is "nine million, seven hundred twenty-nine thousand, nine hundred forty-four".