3963931 has 2 divisors, whose sum is σ = 3963932. Its totient is φ = 3963930.

The previous prime is 3963899. The next prime is 3963959. The reversal of 3963931 is 1393693.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3963931 - 2⁵ = 3963899 is a prime.

It is a super-2 number, since 2×3963931² = 31425497945522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3963991) 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, 1981965 + 1981966.

It is an arithmetic number, because the mean of its divisors is an integer number (1981966).

Almost surely, 2^3963931 is an apocalyptic number.

3963931 is a deficient number, since it is larger than the sum of its proper divisors (1).

3963931 is an equidigital number, since it uses as much as digits as its factorization.

3963931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13122, while the sum is 34.

The square root of 3963931 is about 1990.9623301308. The cubic root of 3963931 is about 158.2615307550.

The spelling of 3963931 in words is "three million, nine hundred sixty-three thousand, nine hundred thirty-one".