3965963 has 2 divisors, whose sum is σ = 3965964. Its totient is φ = 3965962.

The previous prime is 3965939. The next prime is 3966007. The reversal of 3965963 is 3695693.

It is a weak prime.

It is an emirp because it is prime and its reverse (3695693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3965963 - 2⁸ = 3965707 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3965963.

It is not a weakly prime, because it can be changed into another prime (3965903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982981 + 1982982.

It is an arithmetic number, because the mean of its divisors is an integer number (1982982).

Almost surely, 2^3965963 is an apocalyptic number.

3965963 is a deficient number, since it is larger than the sum of its proper divisors (1).

3965963 is an equidigital number, since it uses as much as digits as its factorization.

3965963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 41.

The square root of 3965963 is about 1991.4725707375. The cubic root of 3965963 is about 158.2885689396.

The spelling of 3965963 in words is "three million, nine hundred sixty-five thousand, nine hundred sixty-three".