6389887 has 8 divisors (see below), whose sum is σ = 7319072. Its totient is φ = 5464800.

The previous prime is 6389881. The next prime is 6389897. The reversal of 6389887 is 7889836.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6389887 - 2³ = 6389879 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6389887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389881) 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 7 ways as a sum of consecutive naturals, for example, 3937 + ... + 5317.

It is an arithmetic number, because the mean of its divisors is an integer number (914884).

Almost surely, 2^6389887 is an apocalyptic number.

6389887 is a deficient number, since it is larger than the sum of its proper divisors (929185).

6389887 is a wasteful number, since it uses less digits than its factorization.

6389887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049.

The product of its digits is 580608, while the sum is 49.

The square root of 6389887 is about 2527.8225807995. The cubic root of 6389887 is about 185.5657093154.

The spelling of 6389887 in words is "six million, three hundred eighty-nine thousand, eight hundred eighty-seven".