6389909 has 16 divisors (see below), whose sum is σ = 7246080. Its totient is φ = 5598720.

The previous prime is 6389899. The next prime is 6389917. The reversal of 6389909 is 9099836.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6389909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6389909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23444 + ... + 23714.

It is an arithmetic number, because the mean of its divisors is an integer number (452880).

Almost surely, 2^6389909 is an apocalyptic number.

It is an amenable number.

6389909 is a deficient number, since it is larger than the sum of its proper divisors (856171).

6389909 is a wasteful number, since it uses less digits than its factorization.

6389909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 6389909 is about 2527.8269323670. The cubic root of 6389909 is about 185.5659222790.

The spelling of 6389909 in words is "six million, three hundred eighty-nine thousand, nine hundred nine".