9929899934704 has 80 divisors (see below), whose sum is σ = 20209748457600. Its totient is φ = 4719836765952.

The previous prime is 9929899934627. The next prime is 9929899934711. The reversal of 9929899934704 is 4074399989299.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62936587 + ... + 63094165.

It is an arithmetic number, because the mean of its divisors is an integer number (252621855720).

Almost surely, 2^{9929899934704} 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 9929899934704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10104874228800).

9929899934704 is an abundant number, since it is smaller than the sum of its proper divisors (10279848522896).

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

9929899934704 is a wasteful number, since it uses less digits than its factorization.

9929899934704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159710 (or 159704 counting only the distinct ones).

The product of its (nonzero) digits is 2857026816, while the sum is 82.

The spelling of 9929899934704 in words is "nine trillion, nine hundred twenty-nine billion, eight hundred ninety-nine million, nine hundred thirty-four thousand, seven hundred four".