9999000047 has 2 divisors, whose sum is σ = 9999000048. Its totient is φ = 9999000046.

The previous prime is 9999000029. The next prime is 9999000083. The reversal of 9999000047 is 7400009999.

It is a weak prime.

It is an emirp because it is prime and its reverse (7400009999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9999000047 - 2¹⁶ = 9998934511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9998999965 and 9999000010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9999000247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999500023 + 4999500024.

It is an arithmetic number, because the mean of its divisors is an integer number (4999500024).

Almost surely, 2^9999000047 is an apocalyptic number.

9999000047 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999000047 is an equidigital number, since it uses as much as digits as its factorization.

9999000047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 9999000047 is about 99995.0001100055. Note that the first 3 decimals coincide. The cubic root of 9999000047 is about 2154.3628765238.

The spelling of 9999000047 in words is "nine billion, nine hundred ninety-nine million, forty-seven", and thus it is an aban number.