9999799013 has 2 divisors, whose sum is σ = 9999799014. Its totient is φ = 9999799012.

The previous prime is 9999798989. The next prime is 9999799037. The reversal of 9999799013 is 3109979999.

It is a balanced prime because it is at equal distance from previous prime (9999798989) and next prime (9999799037).

It can be written as a sum of positive squares in only one way, i.e., 7467897889 + 2531901124 = 86417^2 + 50318^2 .

It is a cyclic number.

It is not a de Polignac number, because 9999799013 - 2¹⁰ = 9999797989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9999799063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999899506 + 4999899507.

It is an arithmetic number, because the mean of its divisors is an integer number (4999899507).

Almost surely, 2^9999799013 is an apocalyptic number.

It is an amenable number.

9999799013 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999799013 is an equidigital number, since it uses as much as digits as its factorization.

9999799013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11160261, while the sum is 65.

The square root of 9999799013 is about 99998.9950599505. The cubic root of 9999799013 is about 2154.4202561563.

The spelling of 9999799013 in words is "nine billion, nine hundred ninety-nine million, seven hundred ninety-nine thousand, thirteen".