9973944 has 48 divisors (see below), whose sum is σ = 27354600. Its totient is φ = 3282624.

The previous prime is 9973933. The next prime is 9973967. The reversal of 9973944 is 4493799.

It is a Smith number, since the sum of its digits (45) 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 9973944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5142 + ... + 6810.

Almost surely, 2^9973944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9973944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13677300).

9973944 is an abundant number, since it is smaller than the sum of its proper divisors (17380656).

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

9973944 is a wasteful number, since it uses less digits than its factorization.

9973944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764 (or 1757 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 9973944 is about 3158.1551576830. The cubic root of 9973944 is about 215.2561864134.

The spelling of 9973944 in words is "nine million, nine hundred seventy-three thousand, nine hundred forty-four".