9804923856 has 320 divisors, whose sum is σ = 36464332800. Its totient is φ = 2449626624.

The previous prime is 9804923831. The next prime is 9804923861. The reversal of 9804923856 is 6583294089.

It is a super-2 number, since 2×9804923856² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 740365 + ... + 753491.

It is an arithmetic number, because the mean of its divisors is an integer number (113951040).

Almost surely, 2^9804923856 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 9804923856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18232166400).

9804923856 is an abundant number, since it is smaller than the sum of its proper divisors (26659408944).

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

9804923856 is a wasteful number, since it uses less digits than its factorization.

9804923856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13183 (or 13171 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 9804923856 is about 99019.8154714500. The cubic root of 9804923856 is about 2140.3333000533. Note that the first 4 decimals are identical.

The spelling of 9804923856 in words is "nine billion, eight hundred four million, nine hundred twenty-three thousand, eight hundred fifty-six".