3946157 has 2 divisors, whose sum is σ = 3946158. Its totient is φ = 3946156.

The previous prime is 3946141. The next prime is 3946177. The reversal of 3946157 is 7516493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3511876 + 434281 = 1874^2 + 659^2 .

It is an emirp because it is prime and its reverse (7516493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3946157 - 2⁴ = 3946141 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3946177) by changing a digit.

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, 1973078 + 1973079.

It is an arithmetic number, because the mean of its divisors is an integer number (1973079).

Almost surely, 2^3946157 is an apocalyptic number.

It is an amenable number.

3946157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3946157 is an equidigital number, since it uses as much as digits as its factorization.

3946157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 3946157 is about 1986.4936445909. The cubic root of 3946157 is about 158.0246316349.

The spelling of 3946157 in words is "three million, nine hundred forty-six thousand, one hundred fifty-seven".