9721338 has 16 divisors (see below), whose sum is σ = 21210336. Its totient is φ = 2945840.

The previous prime is 9721319. The next prime is 9721357. The reversal of 9721338 is 8331279.

It is an interprime number because it is at equal distance from previous prime (9721319) and next prime (9721357).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9721299 and 9721308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73581 + ... + 73712.

It is an arithmetic number, because the mean of its divisors is an integer number (1325646).

Almost surely, 2^9721338 is an apocalyptic number.

9721338 is an abundant number, since it is smaller than the sum of its proper divisors (11488998).

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

9721338 is a wasteful number, since it uses less digits than its factorization.

9721338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147309.

The product of its digits is 9072, while the sum is 33.

The square root of 9721338 is about 3117.9060280900. The cubic root of 9721338 is about 213.4233902548.

The spelling of 9721338 in words is "nine million, seven hundred twenty-one thousand, three hundred thirty-eight".