3971963 has 2 divisors, whose sum is σ = 3971964. Its totient is φ = 3971962.

The previous prime is 3971917. The next prime is 3971977. The reversal of 3971963 is 3691793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3971963 - 2⁶ = 3971899 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3971983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985981 + 1985982.

It is an arithmetic number, because the mean of its divisors is an integer number (1985982).

Almost surely, 2^3971963 is an apocalyptic number.

3971963 is a deficient number, since it is larger than the sum of its proper divisors (1).

3971963 is an equidigital number, since it uses as much as digits as its factorization.

3971963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 38.

The square root of 3971963 is about 1992.9784243689. The cubic root of 3971963 is about 158.3683522419.

The spelling of 3971963 in words is "three million, nine hundred seventy-one thousand, nine hundred sixty-three".