9939878600 has 48 divisors (see below), whose sum is σ = 23118014400. Its totient is φ = 3974610240.

The previous prime is 9939878593. The next prime is 9939878609. The reversal of 9939878600 is 68789399.

It is a self number, because there is not a number n which added to its sum of digits gives 9939878600.

It is not an unprimeable number, because it can be changed into a prime (9939878609) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 762941 + ... + 775859.

It is an arithmetic number, because the mean of its divisors is an integer number (481625300).

Almost surely, 2^9939878600 is an apocalyptic number.

It is an amenable number.

9939878600 is an abundant number, since it is smaller than the sum of its proper divisors (13178135800).

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

9939878600 is a wasteful number, since it uses less digits than its factorization.

9939878600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16782 (or 16773 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 9939878600 is about 99698.9398138215. The cubic root of 9939878600 is about 2150.1084207088.

The spelling of 9939878600 in words is "nine billion, nine hundred thirty-nine million, eight hundred seventy-eight thousand, six hundred".