9879669789 has 16 divisors (see below), whose sum is σ = 14394132480. Its totient is φ = 5977802160.

The previous prime is 9879669763. The next prime is 9879669847.

It is a happy number.

9879669789 is nontrivially palindromic in base 10.

9879669789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9879669789 - 2⁷ = 9879669661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9879669089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226579 + ... + 266640.

It is an arithmetic number, because the mean of its divisors is an integer number (899633280).

Almost surely, 2^9879669789 is an apocalyptic number.

It is an amenable number.

9879669789 is a deficient number, since it is larger than the sum of its proper divisors (4514462691).

9879669789 is a wasteful number, since it uses less digits than its factorization.

9879669789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493840.

The product of its digits is 740710656, while the sum is 78.

The square root of 9879669789 is about 99396.5280530462. The cubic root of 9879669789 is about 2145.7583428257.

The spelling of 9879669789 in words is "nine billion, eight hundred seventy-nine million, six hundred sixty-nine thousand, seven hundred eighty-nine".