9928534984 has 16 divisors (see below), whose sum is σ = 18628837020. Its totient is φ = 4960845120.

The previous prime is 9928534921. The next prime is 9928534999. The reversal of 9928534984 is 4894358299.

It can be written as a sum of positive squares in 2 ways, for example, as 9562884100 + 365650884 = 97790^2 + 19122^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415447 + ... + 438694.

Almost surely, 2^9928534984 is an apocalyptic number.

It is an amenable number.

9928534984 is a deficient number, since it is larger than the sum of its proper divisors (8700302036).

9928534984 is a wasteful number, since it uses less digits than its factorization.

9928534984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855600 (or 855596 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 61.

The square root of 9928534984 is about 99642.0342225107. The cubic root of 9928534984 is about 2149.2901917915.

The spelling of 9928534984 in words is "nine billion, nine hundred twenty-eight million, five hundred thirty-four thousand, nine hundred eighty-four".