3963271989 has 4 divisors (see below), whose sum is σ = 5284362656. Its totient is φ = 2642181324.

The previous prime is 3963271913. The next prime is 3963271993. The reversal of 3963271989 is 9891723693.

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 3963271989 - 2¹⁶ = 3963206453 is a prime.

It is a super-2 number, since 2×3963271989² = 31415049717584032242, which contains 22 as substring.

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 (3963270989) 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 3 ways as a sum of consecutive naturals, for example, 660545329 + ... + 660545334.

It is an arithmetic number, because the mean of its divisors is an integer number (1321090664).

Almost surely, 2^3963271989 is an apocalyptic number.

It is an amenable number.

3963271989 is a deficient number, since it is larger than the sum of its proper divisors (1321090667).

3963271989 is a wasteful number, since it uses less digits than its factorization.

3963271989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321090666.

The product of its digits is 4408992, while the sum is 57.

The square root of 3963271989 is about 62954.5231814204. The cubic root of 3963271989 is about 1582.5275984296.

The spelling of 3963271989 in words is "three billion, nine hundred sixty-three million, two hundred seventy-one thousand, nine hundred eighty-nine".