3943214656 has 14 divisors (see below), whose sum is σ = 7824816710. Its totient is φ = 1971607296.

The previous prime is 3943214641. The next prime is 3943214659. The reversal of 3943214656 is 6564123493.

It can be written as a sum of positive squares in only one way, i.e., 2422214656 + 1521000000 = 49216^2 + 39000^2 .

It is not an unprimeable number, because it can be changed into a prime (3943214659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806301 + ... + 30806428.

Almost surely, 2^3943214656 is an apocalyptic number.

It is an amenable number.

3943214656 is a deficient number, since it is larger than the sum of its proper divisors (3881602054).

3943214656 is an equidigital number, since it uses as much as digits as its factorization.

3943214656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61612741 (or 61612731 counting only the distinct ones).

The product of its digits is 466560, while the sum is 43.

The square root of 3943214656 is about 62795.0209491167. The cubic root of 3943214656 is about 1579.8534628826.

The spelling of 3943214656 in words is "three billion, nine hundred forty-three million, two hundred fourteen thousand, six hundred fifty-six".