3956543 has 2 divisors, whose sum is σ = 3956544. Its totient is φ = 3956542.

The previous prime is 3956509. The next prime is 3956549. The reversal of 3956543 is 3456593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3956543 - 2⁸ = 3956287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3956549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978271 + 1978272.

It is an arithmetic number, because the mean of its divisors is an integer number (1978272).

Almost surely, 2^3956543 is an apocalyptic number.

3956543 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956543 is an equidigital number, since it uses as much as digits as its factorization.

3956543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 35.

The square root of 3956543 is about 1989.1060806302. The cubic root of 3956543 is about 158.1631466549.

The spelling of 3956543 in words is "three million, nine hundred fifty-six thousand, five hundred forty-three".