9817799904 has 288 divisors, whose sum is σ = 31529481984. Its totient is φ = 2872074240.

The previous prime is 9817799881. The next prime is 9817799923. The reversal of 9817799904 is 4099977189.

9817799904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 13213357 + ... + 13214099.

It is an arithmetic number, because the mean of its divisors is an integer number (109477368).

Almost surely, 2^9817799904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9817799904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15764740992).

9817799904 is an abundant number, since it is smaller than the sum of its proper divisors (21711682080).

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

9817799904 is a wasteful number, since it uses less digits than its factorization.

9817799904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 63.

The square root of 9817799904 is about 99084.8116716180. The cubic root of 9817799904 is about 2141.2698016107.

The spelling of 9817799904 in words is "nine billion, eight hundred seventeen million, seven hundred ninety-nine thousand, nine hundred four".