988989989889 has 16 divisors (see below), whose sum is σ = 1514243047680. Its totient is φ = 567841142160.

The previous prime is 988989989879. The next prime is 988989989891.

988989989889 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 988989989889 - 2²⁷ = 988855772161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 988989989793 and 988989989802.

It is not an unprimeable number, because it can be changed into a prime (988989989839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788667627 + ... + 788668880.

It is an arithmetic number, because the mean of its divisors is an integer number (94640190480).

Almost surely, 2^988989989889 is an apocalyptic number.

It is an amenable number.

988989989889 is a deficient number, since it is larger than the sum of its proper divisors (525253057791).

988989989889 is a wasteful number, since it uses less digits than its factorization.

988989989889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577336540.

The product of its digits is 139314069504, while the sum is 102.

The spelling of 988989989889 in words is "nine hundred eighty-eight billion, nine hundred eighty-nine million, nine hundred eighty-nine thousand, eight hundred eighty-nine".