9721823984 has 10 divisors (see below), whose sum is σ = 18836034000. Its totient is φ = 4860911984.

The previous prime is 9721823959. The next prime is 9721823987. The reversal of 9721823984 is 4893281279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9721823987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303806984 + ... + 303807015.

It is an arithmetic number, because the mean of its divisors is an integer number (1883603400).

Almost surely, 2^9721823984 is an apocalyptic number.

It is an amenable number.

9721823984 is a deficient number, since it is larger than the sum of its proper divisors (9114210016).

9721823984 is a wasteful number, since it uses less digits than its factorization.

9721823984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607614007 (or 607614001 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 9721823984 is about 98599.3102612792. The cubic root of 9721823984 is about 2134.2694664534.

The spelling of 9721823984 in words is "nine billion, seven hundred twenty-one million, eight hundred twenty-three thousand, nine hundred eighty-four".