8921988576 has 72 divisors (see below), whose sum is σ = 25384623264. Its totient is φ = 2972505600.

The previous prime is 8921988553. The next prime is 8921988583. The reversal of 8921988576 is 6758891298.

It is a happy number.

8921988576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670500 + ... + 683676.

It is an arithmetic number, because the mean of its divisors is an integer number (352564212).

Almost surely, 2^8921988576 is an apocalyptic number.

It is an amenable number.

8921988576 is an abundant number, since it is smaller than the sum of its proper divisors (16462634688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8921988576 is a wasteful number, since it uses less digits than its factorization.

8921988576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15544 (or 15533 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 63.

The square root of 8921988576 is about 94456.2786478485. The cubic root of 8921988576 is about 2074.0563629968.

The spelling of 8921988576 in words is "eight billion, nine hundred twenty-one million, nine hundred eighty-eight thousand, five hundred seventy-six".