9946323721 has 2 divisors, whose sum is σ = 9946323722. Its totient is φ = 9946323720.

The previous prime is 9946323703. The next prime is 9946323727. The reversal of 9946323721 is 1273236499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9650311696 + 296012025 = 98236^2 + 17205^2 .

It is a cyclic number.

It is not a de Polignac number, because 9946323721 - 2¹¹ = 9946321673 is a prime.

It is not a weakly prime, because it can be changed into another prime (9946323727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973161860 + 4973161861.

It is an arithmetic number, because the mean of its divisors is an integer number (4973161861).

Almost surely, 2^9946323721 is an apocalyptic number.

It is an amenable number.

9946323721 is a deficient number, since it is larger than the sum of its proper divisors (1).

9946323721 is an equidigital number, since it uses as much as digits as its factorization.

9946323721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The square root of 9946323721 is about 99731.2574923228. The cubic root of 9946323721 is about 2150.5730378806.

The spelling of 9946323721 in words is "nine billion, nine hundred forty-six million, three hundred twenty-three thousand, seven hundred twenty-one".