9939691244 has 12 divisors (see below), whose sum is σ = 19879382544. Its totient is φ = 4259867664.

The previous prime is 9939691243. The next prime is 9939691249. The reversal of 9939691244 is 4421969399.

9939691244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

9939691244 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 9939691244.

It is not an unprimeable number, because it can be changed into a prime (9939691243) 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, 177494459 + ... + 177494514.

It is an arithmetic number, because the mean of its divisors is an integer number (1656615212).

Almost surely, 2^9939691244 is an apocalyptic number.

It is an amenable number.

9939691244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9939691244 is a wasteful number, since it uses less digits than its factorization.

9939691244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354988984 (or 354988982 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 56.

The square root of 9939691244 is about 99698.0002006058. Note that the first 3 decimals coincide. The cubic root of 9939691244 is about 2150.0949115483.

The spelling of 9939691244 in words is "nine billion, nine hundred thirty-nine million, six hundred ninety-one thousand, two hundred forty-four".