9903221994 has 32 divisors (see below), whose sum is σ = 20455096320. Its totient is φ = 3193066800.

The previous prime is 9903221981. The next prime is 9903222001. The reversal of 9903221994 is 4991223099.

9903221994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 418327 + ... + 441365.

It is an arithmetic number, because the mean of its divisors is an integer number (639221760).

Almost surely, 2^9903221994 is an apocalyptic number.

9903221994 is an abundant number, since it is smaller than the sum of its proper divisors (10551874326).

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

9903221994 is a wasteful number, since it uses less digits than its factorization.

9903221994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25386.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 9903221994 is about 99514.9335225623. The cubic root of 9903221994 is about 2147.4620851502.

The spelling of 9903221994 in words is "nine billion, nine hundred three million, two hundred twenty-one thousand, nine hundred ninety-four".