3940426057 has 2 divisors, whose sum is σ = 3940426058. Its totient is φ = 3940426056.

The previous prime is 3940426013. The next prime is 3940426103. The reversal of 3940426057 is 7506240493.

It is a happy number.

3940426057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2714305801 + 1226120256 = 52099^2 + 35016^2 .

It is a cyclic number.

It is not a de Polignac number, because 3940426057 - 2²³ = 3932037449 is a prime.

It is not a weakly prime, because it can be changed into another prime (3940426157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970213028 + 1970213029.

It is an arithmetic number, because the mean of its divisors is an integer number (1970213029).

Almost surely, 2^3940426057 is an apocalyptic number.

It is an amenable number.

3940426057 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940426057 is an equidigital number, since it uses as much as digits as its factorization.

3940426057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 3940426057 is about 62772.8130403601. The cubic root of 3940426057 is about 1579.4809565982.

The spelling of 3940426057 in words is "three billion, nine hundred forty million, four hundred twenty-six thousand, fifty-seven".