9988534968 has 16 divisors (see below), whose sum is σ = 24971337480. Its totient is φ = 3329511648.

The previous prime is 9988534891. The next prime is 9988534979. The reversal of 9988534968 is 8694358899.

It is a super-2 number, since 2×9988534968² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 208094455 + ... + 208094502.

Almost surely, 2^9988534968 is an apocalyptic number.

It is an amenable number.

9988534968 is an abundant number, since it is smaller than the sum of its proper divisors (14982802512).

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

9988534968 is a wasteful number, since it uses less digits than its factorization.

9988534968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416188966 (or 416188962 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 69.

The square root of 9988534968 is about 99942.6583997044. The cubic root of 9988534968 is about 2153.6110197493.

The spelling of 9988534968 in words is "nine billion, nine hundred eighty-eight million, five hundred thirty-four thousand, nine hundred sixty-eight".