9931980 has 24 divisors (see below), whose sum is σ = 27809712. Its totient is φ = 2648512.

The previous prime is 9931951. The next prime is 9932009. The reversal of 9931980 is 891399.

9931980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9931951) and next prime (9932009).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82707 + ... + 82826.

It is an arithmetic number, because the mean of its divisors is an integer number (1158738).

Almost surely, 2^9931980 is an apocalyptic number.

It is an amenable number.

9931980 is an abundant number, since it is smaller than the sum of its proper divisors (17877732).

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

9931980 is a wasteful number, since it uses less digits than its factorization.

9931980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165545 (or 165543 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 9931980 is about 3151.5044026623. The cubic root of 9931980 is about 214.9538750882.

It can be divided in two parts, 99319 and 80, that added together give a palindrome (99399).

The spelling of 9931980 in words is "nine million, nine hundred thirty-one thousand, nine hundred eighty".