9923321880 has 128 divisors (see below), whose sum is σ = 33101611200. Its totient is φ = 2644310016.

The previous prime is 9923321879. The next prime is 9923321899. The reversal of 9923321880 is 881233299.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2128512 + ... + 2133168.

Almost surely, 2^9923321880 is an apocalyptic number.

9923321880 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9923321880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16550805600).

9923321880 is an abundant number, since it is smaller than the sum of its proper divisors (23178289320).

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

9923321880 is a wasteful number, since it uses less digits than its factorization.

9923321880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6650 (or 6640 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 9923321880 is about 99615.8716269651. The cubic root of 9923321880 is about 2148.9139551865.

The spelling of 9923321880 in words is "nine billion, nine hundred twenty-three million, three hundred twenty-one thousand, eight hundred eighty".