3943106389 has 2 divisors, whose sum is σ = 3943106390. Its totient is φ = 3943106388.

The previous prime is 3943106371. The next prime is 3943106399. The reversal of 3943106389 is 9836013493.

3943106389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3142499364 + 800607025 = 56058^2 + 28295^2 .

It is a cyclic number.

It is not a de Polignac number, because 3943106389 - 2⁷ = 3943106261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3943106329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971553194 + 1971553195.

It is an arithmetic number, because the mean of its divisors is an integer number (1971553195).

Almost surely, 2^3943106389 is an apocalyptic number.

It is an amenable number.

3943106389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3943106389 is an equidigital number, since it uses as much as digits as its factorization.

3943106389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 3943106389 is about 62794.1588764433. The cubic root of 3943106389 is about 1579.8390036512.

The spelling of 3943106389 in words is "three billion, nine hundred forty-three million, one hundred six thousand, three hundred eighty-nine".