8899659988 has 12 divisors (see below), whose sum is σ = 15575397012. Its totient is φ = 4449546560.

The previous prime is 8899659973. The next prime is 8899660019. The reversal of 8899659988 is 8899569988.

It can be written as a sum of positive squares in 2 ways, for example, as 8666120464 + 233539524 = 93092^2 + 15282^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10056 + ... + 133792.

It is an arithmetic number, because the mean of its divisors is an integer number (1297949751).

Almost surely, 2^8899659988 is an apocalyptic number.

It is an amenable number.

8899659988 is a deficient number, since it is larger than the sum of its proper divisors (6675737024).

8899659988 is a wasteful number, since it uses less digits than its factorization.

8899659988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141722 (or 141720 counting only the distinct ones).

The product of its digits is 806215680, while the sum is 79.

The square root of 8899659988 is about 94338.0092433585. The cubic root of 8899659988 is about 2072.3247073022.

Subtracting from 8899659988 its reverse (8899569988), we obtain a square (90000 = 300²).

The spelling of 8899659988 in words is "eight billion, eight hundred ninety-nine million, six hundred fifty-nine thousand, nine hundred eighty-eight".