9721367 has 2 divisors, whose sum is σ = 9721368. Its totient is φ = 9721366.

The previous prime is 9721357. The next prime is 9721373. The reversal of 9721367 is 7631279.

It is a strong prime.

It is an emirp because it is prime and its reverse (7631279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9721367 - 2²⁰ = 8672791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9721357) 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, 4860683 + 4860684.

It is an arithmetic number, because the mean of its divisors is an integer number (4860684).

Almost surely, 2^9721367 is an apocalyptic number.

9721367 is a deficient number, since it is larger than the sum of its proper divisors (1).

9721367 is an equidigital number, since it uses as much as digits as its factorization.

9721367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 35.

The square root of 9721367 is about 3117.9106786436. The cubic root of 9721367 is about 213.4236024777.

The spelling of 9721367 in words is "nine million, seven hundred twenty-one thousand, three hundred sixty-seven".