3943957 has 2 divisors, whose sum is σ = 3943958. Its totient is φ = 3943956.

The previous prime is 3943939. The next prime is 3943967. The reversal of 3943957 is 7593493.

3943957 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., 3837681 + 106276 = 1959^2 + 326^2 .

It is a cyclic number.

It is not a de Polignac number, because 3943957 - 2⁷ = 3943829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3943937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971978 + 1971979.

It is an arithmetic number, because the mean of its divisors is an integer number (1971979).

Almost surely, 2^3943957 is an apocalyptic number.

It is an amenable number.

3943957 is a deficient number, since it is larger than the sum of its proper divisors (1).

3943957 is an equidigital number, since it uses as much as digits as its factorization.

3943957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 3943957 is about 1985.9398278901. The cubic root of 3943957 is about 157.9952596986.

It can be divided in two parts, 3943 and 957, that added together give a square (4900 = 70²).

The spelling of 3943957 in words is "three million, nine hundred forty-three thousand, nine hundred fifty-seven".