9909868400 has 60 divisors (see below), whose sum is σ = 24629469000. Its totient is φ = 3827255040.

The previous prime is 9909868391. The next prime is 9909868403. The reversal of 9909868400 is 48689099.

9909868400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9909868403) by changing a digit.

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, 415550 + ... + 438749.

It is an arithmetic number, because the mean of its divisors is an integer number (410491150).

Almost surely, 2^9909868400 is an apocalyptic number.

It is an amenable number.

9909868400 is an abundant number, since it is smaller than the sum of its proper divisors (14719600600).

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

9909868400 is a wasteful number, since it uses less digits than its factorization.

9909868400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854346 (or 854335 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 9909868400 is about 99548.3219346263. The cubic root of 9909868400 is about 2147.9423905521.

The spelling of 9909868400 in words is "nine billion, nine hundred nine million, eight hundred sixty-eight thousand, four hundred".