9917408844 has 36 divisors (see below), whose sum is σ = 28650292944. Its totient is φ = 2833545312.

The previous prime is 9917408827. The next prime is 9917408857. The reversal of 9917408844 is 4488047199.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19677147 + ... + 19677650.

Almost surely, 2^9917408844 is an apocalyptic number.

It is an amenable number.

9917408844 is an abundant number, since it is smaller than the sum of its proper divisors (18732884100).

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

9917408844 is a wasteful number, since it uses less digits than its factorization.

9917408844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39354814 (or 39354809 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 9917408844 is about 99586.1880182187. The cubic root of 9917408844 is about 2148.4870440370.

The spelling of 9917408844 in words is "nine billion, nine hundred seventeen million, four hundred eight thousand, eight hundred forty-four".