9996805823 has 2 divisors, whose sum is σ = 9996805824. Its totient is φ = 9996805822.

The previous prime is 9996805807. The next prime is 9996805873. The reversal of 9996805823 is 3285086999.

It is a weak prime.

It is an emirp because it is prime and its reverse (3285086999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9996805823 - 2⁴ = 9996805807 is a prime.

It is a super-2 number, since 2×9996805823² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9996805873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998402911 + 4998402912.

It is an arithmetic number, because the mean of its divisors is an integer number (4998402912).

Almost surely, 2^9996805823 is an apocalyptic number.

9996805823 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996805823 is an equidigital number, since it uses as much as digits as its factorization.

9996805823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The square root of 9996805823 is about 99984.0278394504. The cubic root of 9996805823 is about 2154.2052774128.

The spelling of 9996805823 in words is "nine billion, nine hundred ninety-six million, eight hundred five thousand, eight hundred twenty-three".