9721373 has 2 divisors, whose sum is σ = 9721374. Its totient is φ = 9721372.

The previous prime is 9721367. The next prime is 9721421. The reversal of 9721373 is 3731279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9078169 + 643204 = 3013^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 9721373 - 2⁴ = 9721357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9721273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4860686 + 4860687.

It is an arithmetic number, because the mean of its divisors is an integer number (4860687).

Almost surely, 2^9721373 is an apocalyptic number.

It is an amenable number.

9721373 is a deficient number, since it is larger than the sum of its proper divisors (1).

9721373 is an equidigital number, since it uses as much as digits as its factorization.

9721373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938, while the sum is 32.

The square root of 9721373 is about 3117.9116408263. The cubic root of 9721373 is about 213.4236463858.

The spelling of 9721373 in words is "nine million, seven hundred twenty-one thousand, three hundred seventy-three".