9939120000 has 160 divisors (see below), whose sum is σ = 32991220680. Its totient is φ = 2650368000.

The previous prime is 9939119987. The next prime is 9939120007. The reversal of 9939120000 is 219399.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×9939120000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939120007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 219294 + ... + 260706.

Almost surely, 2^9939120000 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 9939120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16495610340).

9939120000 is an abundant number, since it is smaller than the sum of its proper divisors (23052100680).

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

9939120000 is an equidigital number, since it uses as much as digits as its factorization.

9939120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41450 (or 41423 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 9939120000 is about 99695.1352875355. The cubic root of 9939120000 is about 2150.0537213907.

Adding to 9939120000 its reverse (219399), we get a palindrome (9939339399).

The spelling of 9939120000 in words is "nine billion, nine hundred thirty-nine million, one hundred twenty thousand".