3945157 has 2 divisors, whose sum is σ = 3945158. Its totient is φ = 3945156.

The previous prime is 3945127. The next prime is 3945163. The reversal of 3945157 is 7515493.

3945157 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., 3944196 + 961 = 1986^2 + 31^2 .

It is an emirp because it is prime and its reverse (7515493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3945157 - 2¹¹ = 3943109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3945107) 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, 1972578 + 1972579.

It is an arithmetic number, because the mean of its divisors is an integer number (1972579).

Almost surely, 2^3945157 is an apocalyptic number.

It is an amenable number.

3945157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3945157 is an equidigital number, since it uses as much as digits as its factorization.

3945157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 3945157 is about 1986.2419288697. The cubic root of 3945157 is about 158.0112821084.

The spelling of 3945157 in words is "three million, nine hundred forty-five thousand, one hundred fifty-seven".