9939997914 has 128 divisors (see below), whose sum is σ = 25657344000. Its totient is φ = 2491473600.

The previous prime is 9939997901. The next prime is 9939997931. The reversal of 9939997914 is 4197999399.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6630337 + ... + 6631835.

It is an arithmetic number, because the mean of its divisors is an integer number (200448000).

Almost surely, 2^9939997914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9939997914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12828672000).

9939997914 is an abundant number, since it is smaller than the sum of its proper divisors (15717346086).

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

9939997914 is a wasteful number, since it uses less digits than its factorization.

9939997914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016.

The product of its digits is 44641044, while the sum is 69.

The square root of 9939997914 is about 99699.5381834841. The cubic root of 9939997914 is about 2150.1170236646.

The spelling of 9939997914 in words is "nine billion, nine hundred thirty-nine million, nine hundred ninety-seven thousand, nine hundred fourteen".