9899472800 has 72 divisors (see below), whose sum is σ = 27619544736. Its totient is φ = 3394103040.

The previous prime is 9899472787. The next prime is 9899472809. The reversal of 9899472800 is 82749989.

It is a happy number.

9899472800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (9899472809) 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, 878282 + ... + 889481.

It is an arithmetic number, because the mean of its divisors is an integer number (383604788).

Almost surely, 2^9899472800 is an apocalyptic number.

It is an amenable number.

9899472800 is an abundant number, since it is smaller than the sum of its proper divisors (17720071936).

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

9899472800 is a wasteful number, since it uses less digits than its factorization.

9899472800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767790 (or 1767777 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 9899472800 is about 99496.0943957098. The cubic root of 9899472800 is about 2147.1910532172.

The spelling of 9899472800 in words is "nine billion, eight hundred ninety-nine million, four hundred seventy-two thousand, eight hundred".