9938920956 has 24 divisors (see below), whose sum is σ = 23194384080. Its totient is φ = 3312463872.

The previous prime is 9938920951. The next prime is 9938920963. The reversal of 9938920956 is 6590298399.

It is a self number, because there is not a number n which added to its sum of digits gives 9938920956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9938920951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22140 + ... + 142716.

It is an arithmetic number, because the mean of its divisors is an integer number (966432670).

Almost surely, 2^9938920956 is an apocalyptic number.

It is an amenable number.

9938920956 is an abundant number, since it is smaller than the sum of its proper divisors (13255463124).

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

9938920956 is a wasteful number, since it uses less digits than its factorization.

9938920956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127453 (or 127451 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 60.

The square root of 9938920956 is about 99694.1370191848. The cubic root of 9938920956 is about 2150.0393687401.

The spelling of 9938920956 in words is "nine billion, nine hundred thirty-eight million, nine hundred twenty thousand, nine hundred fifty-six".