9879889789 has 32 divisors (see below), whose sum is σ = 12481413120. Its totient is φ = 7596960000.

The previous prime is 9879889783. The next prime is 9879889793.

9879889789 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9879889789 - 2⁵ = 9879889757 is a prime.

It is a super-2 number, since 2×9879889789² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9879889783) 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 31 ways as a sum of consecutive naturals, for example, 2077164 + ... + 2081914.

It is an arithmetic number, because the mean of its divisors is an integer number (390044160).

Almost surely, 2^9879889789 is an apocalyptic number.

It is an amenable number.

9879889789 is a deficient number, since it is larger than the sum of its proper divisors (2601523331).

9879889789 is a wasteful number, since it uses less digits than its factorization.

9879889789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121.

The product of its digits is 1316818944, while the sum is 82.

The square root of 9879889789 is about 99397.6347253797. The cubic root of 9879889789 is about 2145.7742699212.

The spelling of 9879889789 in words is "nine billion, eight hundred seventy-nine million, eight hundred eighty-nine thousand, seven hundred eighty-nine".