9879665719 has 48 divisors (see below), whose sum is σ = 13306169376. Its totient is φ = 7228569600.

The previous prime is 9879665717. The next prime is 9879665729. The reversal of 9879665719 is 9175669789.

It is not a de Polignac number, because 9879665719 - 2¹ = 9879665717 is a prime.

It is a super-2 number, since 2×9879665719² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9879665717) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4956187 + ... + 4958179.

It is an arithmetic number, because the mean of its divisors is an integer number (277211862).

Almost surely, 2^9879665719 is an apocalyptic number.

9879665719 is a deficient number, since it is larger than the sum of its proper divisors (3426503657).

9879665719 is a wasteful number, since it uses less digits than its factorization.

9879665719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576 (or 2569 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 67.

The square root of 9879665719 is about 99396.5075794919. The cubic root of 9879665719 is about 2145.7580481722.

The spelling of 9879665719 in words is "nine billion, eight hundred seventy-nine million, six hundred sixty-five thousand, seven hundred nineteen".