9438944961 has 4 divisors (see below), whose sum is σ = 12585259952. Its totient is φ = 6292629972.

The previous prime is 9438944951. The next prime is 9438945053. The reversal of 9438944961 is 1694498349.

9438944961 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 not a de Polignac number, because 9438944961 - 2¹⁸ = 9438682817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9438944951) 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, 1573157491 + ... + 1573157496.

It is an arithmetic number, because the mean of its divisors is an integer number (3146314988).

Almost surely, 2^9438944961 is an apocalyptic number.

It is an amenable number.

9438944961 is a deficient number, since it is larger than the sum of its proper divisors (3146314991).

9438944961 is a wasteful number, since it uses less digits than its factorization.

9438944961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146314990.

The product of its digits is 6718464, while the sum is 57.

The square root of 9438944961 is about 97154.2328516879. The cubic root of 9438944961 is about 2113.3648729289.

The spelling of 9438944961 in words is "nine billion, four hundred thirty-eight million, nine hundred forty-four thousand, nine hundred sixty-one".