9991000200 has 48 divisors (see below), whose sum is σ = 30972102480. Its totient is φ = 2664266560.

The previous prime is 9991000183. The next prime is 9991000207. The reversal of 9991000200 is 20001999.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (9991000207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8325234 + ... + 8326433.

It is an arithmetic number, because the mean of its divisors is an integer number (645252135).

Almost surely, 2^9991000200 is an apocalyptic number.

It is an amenable number.

9991000200 is an abundant number, since it is smaller than the sum of its proper divisors (20981102280).

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

9991000200 is a wasteful number, since it uses less digits than its factorization.

9991000200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16651686 (or 16651677 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 9991000200 is about 99954.9908708915. The cubic root of 9991000200 is about 2153.7881800003.

The spelling of 9991000200 in words is "nine billion, nine hundred ninety-one million, two hundred", and thus it is an aban number.