9911980208 has 40 divisors (see below), whose sum is σ = 20714778336. Its totient is φ = 4567449600.

The previous prime is 9911980187. The next prime is 9911980213. The reversal of 9911980208 is 8020891199.

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, 93488 + ... + 169008.

Almost surely, 2^9911980208 is an apocalyptic number.

It is an amenable number.

9911980208 is an abundant number, since it is smaller than the sum of its proper divisors (10802798128).

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

9911980208 is a wasteful number, since it uses less digits than its factorization.

9911980208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76173 (or 76167 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 47.

The square root of 9911980208 is about 99558.9283188605. The cubic root of 9911980208 is about 2148.0949563100.

The spelling of 9911980208 in words is "nine billion, nine hundred eleven million, nine hundred eighty thousand, two hundred eight".