9931998060 has 576 divisors, whose sum is σ = 35900807040. Its totient is φ = 2297714688.

The previous prime is 9931998053. The next prime is 9931998061. The reversal of 9931998060 is 608991399.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 9931997988 and 9931998006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9931998061) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 268432362 + ... + 268432398.

It is an arithmetic number, because the mean of its divisors is an integer number (62327790).

Almost surely, 2^9931998060 is an apocalyptic number.

9931998060 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 9931998060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17950403520).

9931998060 is an abundant number, since it is smaller than the sum of its proper divisors (25968808980).

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

9931998060 is a wasteful number, since it uses less digits than its factorization.

9931998060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 9931998060 is about 99659.4102932583. The cubic root of 9931998060 is about 2149.5400537657.

The spelling of 9931998060 in words is "nine billion, nine hundred thirty-one million, nine hundred ninety-eight thousand, sixty".