988992299889 has 24 divisors (see below), whose sum is σ = 1569787401312. Its totient is φ = 595014160320.

The previous prime is 988992299887. The next prime is 988992299917.

988992299889 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 988992299889 - 2¹ = 988992299887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 988992299799 and 988992299808.

It is not an unprimeable number, because it can be changed into a prime (988992299881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36445639 + ... + 36472764.

It is an arithmetic number, because the mean of its divisors is an integer number (65407808388).

Almost surely, 2^988992299889 is an apocalyptic number.

988992299889 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

988992299889 is a deficient number, since it is larger than the sum of its proper divisors (580795101423).

988992299889 is a wasteful number, since it uses less digits than its factorization.

988992299889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72918557 (or 72918554 counting only the distinct ones).

The product of its digits is 8707129344, while the sum is 90.

The spelling of 988992299889 in words is "nine hundred eighty-eight billion, nine hundred ninety-two million, two hundred ninety-nine thousand, eight hundred eighty-nine".