9840947808 has 48 divisors (see below), whose sum is σ = 26955645696. Its totient is φ = 3137692800.

The previous prime is 9840947791. The next prime is 9840947821. The reversal of 9840947808 is 8087490489.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2226268 + ... + 2230683.

It is an arithmetic number, because the mean of its divisors is an integer number (561575952).

Almost surely, 2^9840947808 is an apocalyptic number.

It is an amenable number.

9840947808 is an abundant number, since it is smaller than the sum of its proper divisors (17114697888).

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

9840947808 is a wasteful number, since it uses less digits than its factorization.

9840947808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456987 (or 4456979 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 9840947808 is about 99201.5514394810. The cubic root of 9840947808 is about 2142.9513393818.

The spelling of 9840947808 in words is "nine billion, eight hundred forty million, nine hundred forty-seven thousand, eight hundred eight".