8921338672 has 40 divisors (see below), whose sum is σ = 17889814800. Its totient is φ = 4304762112.

The previous prime is 8921338661. The next prime is 8921338691. The reversal of 8921338672 is 2768331298.

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 7 ways as a sum of consecutive naturals, for example, 1419954 + ... + 1426222.

It is an arithmetic number, because the mean of its divisors is an integer number (447245370).

Almost surely, 2^8921338672 is an apocalyptic number.

It is an amenable number.

8921338672 is an abundant number, since it is smaller than the sum of its proper divisors (8968476128).

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

8921338672 is a wasteful number, since it uses less digits than its factorization.

8921338672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9373 (or 9367 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 8921338672 is about 94452.8383480348. The cubic root of 8921338672 is about 2074.0060016435.

The spelling of 8921338672 in words is "eight billion, nine hundred twenty-one million, three hundred thirty-eight thousand, six hundred seventy-two".