9938945012 has 24 divisors (see below), whose sum is σ = 18156679296. Its totient is φ = 4751496288.

The previous prime is 9938944997. The next prime is 9938945017. The reversal of 9938945012 is 2105498399.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9938945017) 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, 223118 + ... + 263930.

It is an arithmetic number, because the mean of its divisors is an integer number (756528304).

Almost surely, 2^9938945012 is an apocalyptic number.

9938945012 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

9938945012 is a deficient number, since it is larger than the sum of its proper divisors (8217734284).

9938945012 is a wasteful number, since it uses less digits than its factorization.

9938945012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43487 (or 43485 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 9938945012 is about 99694.2576681325. The cubic root of 9938945012 is about 2150.0411033786.

The spelling of 9938945012 in words is "nine billion, nine hundred thirty-eight million, nine hundred forty-five thousand, twelve".