988938839889 has 96 divisors (see below), whose sum is σ = 1921061286144. Its totient is φ = 473445181440.

The previous prime is 988938839789. The next prime is 988938839909.

988938839889 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 988938839889 - 2⁸ = 988938839633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 988938839799 and 988938839808.

It is not an unprimeable number, because it can be changed into a prime (988938839789) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5469597 + ... + 5647509.

It is an arithmetic number, because the mean of its divisors is an integer number (20011055064).

Almost surely, 2^988938839889 is an apocalyptic number.

988938839889 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

988938839889 is a deficient number, since it is larger than the sum of its proper divisors (932122446255).

988938839889 is a wasteful number, since it uses less digits than its factorization.

988938839889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178567 (or 178564 counting only the distinct ones).

The product of its digits is 15479341056, while the sum is 90.

The spelling of 988938839889 in words is "nine hundred eighty-eight billion, nine hundred thirty-eight million, eight hundred thirty-nine thousand, eight hundred eighty-nine".