6389963 has 2 divisors, whose sum is σ = 6389964. Its totient is φ = 6389962.

The previous prime is 6389959. The next prime is 6389983. The reversal of 6389963 is 3699836.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6389963 - 2² = 6389959 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6389953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194981 + 3194982.

It is an arithmetic number, because the mean of its divisors is an integer number (3194982).

Almost surely, 2^6389963 is an apocalyptic number.

6389963 is a deficient number, since it is larger than the sum of its proper divisors (1).

6389963 is an equidigital number, since it uses as much as digits as its factorization.

6389963 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 6389963 is about 2527.8376134554. The cubic root of 6389963 is about 185.5664450059.

It can be divided in two parts, 638 and 9963, that added together give a palindrome (10601).

The spelling of 6389963 in words is "six million, three hundred eighty-nine thousand, nine hundred sixty-three".