8899779988 has 24 divisors (see below), whose sum is σ = 17729208000.
Its totient is φ = 3869469120.
The previous prime is 8899779953. The next prime is 8899779991.
It can be divided in two parts, 8899 and 779988, that added together give a palindrome (788887).
8899779988 is nontrivially palindromic in base 10.
It is a zygodrome in base 10.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4396113 + ... + 4398136.
It is an arithmetic number, because the mean of its divisors is an integer number (738717000).
Almost surely, 28899779988 is an apocalyptic number.
It is an amenable number.
8899779988 is a deficient number, since it is larger than the sum of its proper divisors (8829428012).
8899779988 is a wasteful number, since it uses less digits than its factorization.
8899779988 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8794287 (or 8794285 counting only the distinct ones).
The product of its digits is 1316818944, while the sum is 82.
The square root of 8899779988 is about 94338.6452520917.
The cubic root of 8899779988 is about 2072.3340214350.
The spelling of 8899779988 in words is "eight billion, eight hundred ninety-nine million, seven hundred seventy-nine thousand, nine hundred eighty-eight".