9363721 has 2 divisors, whose sum is σ = 9363722. Its totient is φ = 9363720.

The previous prime is 9363709. The next prime is 9363769. The reversal of 9363721 is 1273639.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9363600 + 121 = 3060^2 + 11^2 .

It is an emirp because it is prime and its reverse (1273639) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9363721 - 2⁵ = 9363689 is a prime.

It is not a weakly prime, because it can be changed into another prime (9363521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4681860 + 4681861.

It is an arithmetic number, because the mean of its divisors is an integer number (4681861).

Almost surely, 2^9363721 is an apocalyptic number.

It is an amenable number.

9363721 is a deficient number, since it is larger than the sum of its proper divisors (1).

9363721 is an equidigital number, since it uses as much as digits as its factorization.

9363721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 31.

The square root of 9363721 is about 3060.0197711780. The cubic root of 9363721 is about 210.7735717066.

The spelling of 9363721 in words is "nine million, three hundred sixty-three thousand, seven hundred twenty-one".