3964221775 has 6 divisors (see below), whose sum is σ = 4915635032. Its totient is φ = 3171377400.

The previous prime is 3964221743. The next prime is 3964221797. The reversal of 3964221775 is 5771224693.

3964221775 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3964221775 - 2⁵ = 3964221743 is a prime.

It is a Duffinian number.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 79284411 + ... + 79284460.

Almost surely, 2^3964221775 is an apocalyptic number.

3964221775 is a deficient number, since it is larger than the sum of its proper divisors (951413257).

3964221775 is a wasteful number, since it uses less digits than its factorization.

3964221775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158568881 (or 158568876 counting only the distinct ones).

The product of its digits is 635040, while the sum is 46.

The square root of 3964221775 is about 62962.0661589183. The cubic root of 3964221775 is about 1582.6540042974.

The spelling of 3964221775 in words is "three billion, nine hundred sixty-four million, two hundred twenty-one thousand, seven hundred seventy-five".