9879847199 has 2 divisors, whose sum is σ = 9879847200. Its totient is φ = 9879847198.

The previous prime is 9879847193. The next prime is 9879847231. The reversal of 9879847199 is 9917489789.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9879847199 is a prime.

It is a super-2 number, since 2×9879847199² (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 (9879847193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4939923599 + 4939923600.

It is an arithmetic number, because the mean of its divisors is an integer number (4939923600).

Almost surely, 2^9879847199 is an apocalyptic number.

9879847199 is a deficient number, since it is larger than the sum of its proper divisors (1).

9879847199 is an equidigital number, since it uses as much as digits as its factorization.

9879847199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82301184, while the sum is 71.

The square root of 9879847199 is about 99397.4204846383. The cubic root of 9879847199 is about 2145.7711865988.

The spelling of 9879847199 in words is "nine billion, eight hundred seventy-nine million, eight hundred forty-seven thousand, one hundred ninety-nine".