3964448444693 has 12 divisors (see below), whose sum is σ = 4417310277324. Its totient is φ = 3554673566400.

The previous prime is 3964448444653. The next prime is 3964448444711.

3964448444693 is nontrivially palindromic in base 10.

3964448444693 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1132440762244 + 2832007682449 = 1064162^2 + 1682857^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3964448444693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964448444653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224402378 + ... + 224420043.

It is an arithmetic number, because the mean of its divisors is an integer number (368109189777).

Almost surely, 2^{3964448444693} is an apocalyptic number.

It is an amenable number.

3964448444693 is a deficient number, since it is larger than the sum of its proper divisors (452861832631).

3964448444693 is a wasteful number, since it uses less digits than its factorization.

3964448444693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448822516 (or 448822505 counting only the distinct ones).

The product of its digits is 859963392, while the sum is 68.

The spelling of 3964448444693 in words is "three trillion, nine hundred sixty-four billion, four hundred forty-eight million, four hundred forty-four thousand, six hundred ninety-three".