9889229889 has 48 divisors (see below), whose sum is σ = 18243598464. Its totient is φ = 5011948800.

The previous prime is 9889229873. The next prime is 9889229893.

9889229889 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9889229889 - 2⁴ = 9889229873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9889229089) 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, 145614 + ... + 202439.

It is an arithmetic number, because the mean of its divisors is an integer number (380074968).

Almost surely, 2^9889229889 is an apocalyptic number.

9889229889 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

9889229889 is a deficient number, since it is larger than the sum of its proper divisors (8354368575).

9889229889 is a wasteful number, since it uses less digits than its factorization.

9889229889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348118 (or 348115 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 72.

The square root of 9889229889 is about 99444.6071388489. The cubic root of 9889229889 is about 2146.4502367729.

It can be divided in two parts, 9889 and 229889, that added together give a triangular number (239778 = T₆₉₂).

The spelling of 9889229889 in words is "nine billion, eight hundred eighty-nine million, two hundred twenty-nine thousand, eight hundred eighty-nine".