9938394433 has 4 divisors (see below), whose sum is σ = 10841884848. Its totient is φ = 9034904020.

The previous prime is 9938394407. The next prime is 9938394449. The reversal of 9938394433 is 3344938399.

9938394433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9938394433 - 2³³ = 1348459841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9938394233) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 451745191 + ... + 451745212.

It is an arithmetic number, because the mean of its divisors is an integer number (2710471212).

Almost surely, 2^9938394433 is an apocalyptic number.

It is an amenable number.

9938394433 is a deficient number, since it is larger than the sum of its proper divisors (903490415).

9938394433 is a wasteful number, since it uses less digits than its factorization.

9938394433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903490414.

The product of its digits is 7558272, while the sum is 55.

The square root of 9938394433 is about 99691.4962923117. The cubic root of 9938394433 is about 2150.0014013331.

The spelling of 9938394433 in words is "nine billion, nine hundred thirty-eight million, three hundred ninety-four thousand, four hundred thirty-three".