6363989 has 4 divisors (see below), whose sum is σ = 6375180. Its totient is φ = 6352800.

The previous prime is 6363977. The next prime is 6363991. The reversal of 6363989 is 9893636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3062500 + 3301489 = 1750^2 + 1817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6363989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6363919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4694 + ... + 5895.

It is an arithmetic number, because the mean of its divisors is an integer number (1593795).

Almost surely, 2^6363989 is an apocalyptic number.

It is an amenable number.

6363989 is a deficient number, since it is larger than the sum of its proper divisors (11191).

6363989 is a wasteful number, since it uses less digits than its factorization.

6363989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11190.

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

The square root of 6363989 is about 2522.6947893077. The cubic root of 6363989 is about 185.3146726405.

The spelling of 6363989 in words is "six million, three hundred sixty-three thousand, nine hundred eighty-nine".