3943447168 has 16 divisors (see below), whose sum is σ = 7856086410. Its totient is φ = 1971723520.

The previous prime is 3943447159. The next prime is 3943447171. The reversal of 3943447168 is 8617443493.

It can be written as a sum of positive squares in only one way, i.e., 2831091264 + 1112355904 = 53208^2 + 33352^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

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, 15403963 + ... + 15404218.

Almost surely, 2^3943447168 is an apocalyptic number.

It is an amenable number.

3943447168 is a deficient number, since it is larger than the sum of its proper divisors (3912639242).

3943447168 is an equidigital number, since it uses as much as digits as its factorization.

3943447168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30808195 (or 30808183 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The square root of 3943447168 is about 62796.8722788006. The cubic root of 3943447168 is about 1579.8845143386.

The spelling of 3943447168 in words is "three billion, nine hundred forty-three million, four hundred forty-seven thousand, one hundred sixty-eight".