9923869408 has 72 divisors (see below), whose sum is σ = 20904936192. Its totient is φ = 4621059072.

The previous prime is 9923869399. The next prime is 9923869427. The reversal of 9923869408 is 8049683299.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26184163 + ... + 26184541.

It is an arithmetic number, because the mean of its divisors is an integer number (290346336).

Almost surely, 2^9923869408 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 9923869408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10452468096).

9923869408 is an abundant number, since it is smaller than the sum of its proper divisors (10981066784).

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

9923869408 is a wasteful number, since it uses less digits than its factorization.

9923869408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 58.

The square root of 9923869408 is about 99618.6197856606. The cubic root of 9923869408 is about 2148.9534771979.

The spelling of 9923869408 in words is "nine billion, nine hundred twenty-three million, eight hundred sixty-nine thousand, four hundred eight".