9906820793 has 2 divisors, whose sum is σ = 9906820794. Its totient is φ = 9906820792.

The previous prime is 9906820789. The next prime is 9906820811. The reversal of 9906820793 is 3970286099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9906818089 + 2704 = 99533^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 9906820793 - 2² = 9906820789 is a prime.

It is not a weakly prime, because it can be changed into another prime (9906825793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4953410396 + 4953410397.

It is an arithmetic number, because the mean of its divisors is an integer number (4953410397).

Almost surely, 2^9906820793 is an apocalyptic number.

It is an amenable number.

9906820793 is a deficient number, since it is larger than the sum of its proper divisors (1).

9906820793 is an equidigital number, since it uses as much as digits as its factorization.

9906820793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 9906820793 is about 99533.0135834337. The cubic root of 9906820793 is about 2147.7221805836.

The spelling of 9906820793 in words is "nine billion, nine hundred six million, eight hundred twenty thousand, seven hundred ninety-three".