9908920980 has 144 divisors (see below), whose sum is σ = 34375985280. Its totient is φ = 2263244544.

The previous prime is 9908920949. The next prime is 9908920991. The reversal of 9908920980 is 890298099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2854686 + ... + 2858154.

It is an arithmetic number, because the mean of its divisors is an integer number (238722120).

Almost surely, 2^9908920980 is an apocalyptic number.

9908920980 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 9908920980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17187992640).

9908920980 is an abundant number, since it is smaller than the sum of its proper divisors (24467064300).

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

9908920980 is a wasteful number, since it uses less digits than its factorization.

9908920980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758 (or 5753 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The square root of 9908920980 is about 99543.5632273629. The cubic root of 9908920980 is about 2147.8739379635.

The spelling of 9908920980 in words is "nine billion, nine hundred eight million, nine hundred twenty thousand, nine hundred eighty".