9903955968 has 112 divisors (see below), whose sum is σ = 29343918960. Its totient is φ = 3301244928.

The previous prime is 9903955961. The next prime is 9903955969. The reversal of 9903955968 is 8695593099.

9903955968 is a `hidden beast` number, since 9 + 9 + 0 + 39 + 5 + 596 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9903955961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198796 + ... + 243572.

Almost surely, 2^9903955968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9903955968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14671959480).

9903955968 is an abundant number, since it is smaller than the sum of its proper divisors (19439962992).

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

9903955968 is an equidigital number, since it uses as much as digits as its factorization.

9903955968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44812 (or 44782 counting only the distinct ones).

The product of its (nonzero) digits is 23619600, while the sum is 63.

The square root of 9903955968 is about 99518.6212123138. The cubic root of 9903955968 is about 2147.5151366520.

The spelling of 9903955968 in words is "nine billion, nine hundred three million, nine hundred fifty-five thousand, nine hundred sixty-eight".