9721339 has 8 divisors (see below), whose sum is σ = 9972288. Its totient is φ = 9472320.

The previous prime is 9721319. The next prime is 9721357. The reversal of 9721339 is 9331279.

9721339 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9721339 - 2⁹ = 9720827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9721319) 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, 18399 + ... + 18919.

It is an arithmetic number, because the mean of its divisors is an integer number (1246536).

Almost surely, 2^9721339 is an apocalyptic number.

9721339 is a deficient number, since it is larger than the sum of its proper divisors (250949).

9721339 is a wasteful number, since it uses less digits than its factorization.

9721339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965.

The product of its digits is 10206, while the sum is 34.

The square root of 9721339 is about 3117.9061884540. The cubic root of 9721339 is about 213.4233975728.

The spelling of 9721339 in words is "nine million, seven hundred twenty-one thousand, three hundred thirty-nine".