9969919824 has 80 divisors (see below), whose sum is σ = 27300395520. Its totient is φ = 3124408320.

The previous prime is 9969919793. The next prime is 9969919877. The reversal of 9969919824 is 4289199699.

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 15 ways as a sum of consecutive naturals, for example, 802492 + ... + 814820.

It is an arithmetic number, because the mean of its divisors is an integer number (341254944).

Almost surely, 2^9969919824 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 9969919824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13650197760).

9969919824 is an abundant number, since it is smaller than the sum of its proper divisors (17330475696).

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

9969919824 is a wasteful number, since it uses less digits than its factorization.

9969919824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13348 (or 13342 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 66.

The square root of 9969919824 is about 99849.4858474494. The cubic root of 9969919824 is about 2152.2723279508.

The spelling of 9969919824 in words is "nine billion, nine hundred sixty-nine million, nine hundred nineteen thousand, eight hundred twenty-four".