3989663 has 2 divisors, whose sum is σ = 3989664. Its totient is φ = 3989662.

The previous prime is 3989653. The next prime is 3989683. The reversal of 3989663 is 3669893.

It is a weak prime.

It is an emirp because it is prime and its reverse (3669893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3989663 - 2¹² = 3985567 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 (3989653) 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, 1994831 + 1994832.

It is an arithmetic number, because the mean of its divisors is an integer number (1994832).

Almost surely, 2^3989663 is an apocalyptic number.

3989663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3989663 is an equidigital number, since it uses as much as digits as its factorization.

3989663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 3989663 is about 1997.4140782522. The cubic root of 3989663 is about 158.6032458638.

The spelling of 3989663 in words is "three million, nine hundred eighty-nine thousand, six hundred sixty-three".