9979641396 has 288 divisors, whose sum is σ = 29494886400. Its totient is φ = 2909079360.

The previous prime is 9979641383. The next prime is 9979641401. The reversal of 9979641396 is 6931469799.

9979641396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27798265 + ... + 27798623.

It is an arithmetic number, because the mean of its divisors is an integer number (102412800).

Almost surely, 2^9979641396 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 9979641396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14747443200).

9979641396 is an abundant number, since it is smaller than the sum of its proper divisors (19515245004).

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

9979641396 is a wasteful number, since it uses less digits than its factorization.

9979641396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 437 counting only the distinct ones).

The product of its digits is 19840464, while the sum is 63.

The square root of 9979641396 is about 99898.1551181002. The cubic root of 9979641396 is about 2152.9716539799.

The spelling of 9979641396 in words is "nine billion, nine hundred seventy-nine million, six hundred forty-one thousand, three hundred ninety-six".