3966503 has 2 divisors, whose sum is σ = 3966504. Its totient is φ = 3966502.

The previous prime is 3966439. The next prime is 3966517. The reversal of 3966503 is 3056693.

3966503 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 is a cyclic number.

It is not a de Polignac number, because 3966503 - 2⁶ = 3966439 is a prime.

It is a Chen prime.

It is an Ulam number.

It is equal to p₂₈₀₉₆₇ and since 3966503 and 280967 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3966503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3966563) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983251 + 1983252.

It is an arithmetic number, because the mean of its divisors is an integer number (1983252).

Almost surely, 2^3966503 is an apocalyptic number.

3966503 is a deficient number, since it is larger than the sum of its proper divisors (1).

3966503 is an equidigital number, since it uses as much as digits as its factorization.

3966503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 3966503 is about 1991.6081441890. The cubic root of 3966503 is about 158.2957527306.

The spelling of 3966503 in words is "three million, nine hundred sixty-six thousand, five hundred three".