6385889 has 4 divisors (see below), whose sum is σ = 6392724. Its totient is φ = 6379056.

The previous prime is 6385879. The next prime is 6385891. The reversal of 6385889 is 9885836.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1690000 + 4695889 = 1300^2 + 2167^2 .

It is a cyclic number.

It is not a de Polignac number, because 6385889 - 2²⁰ = 5337313 is a prime.

It is a d-powerful number, because it can be written as 6³ + 3¹³ + 8² + 5³ + 8⁴ + 8⁴ + 9⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6385849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1742 + ... + 3975.

It is an arithmetic number, because the mean of its divisors is an integer number (1598181).

Almost surely, 2^6385889 is an apocalyptic number.

It is an amenable number.

6385889 is a deficient number, since it is larger than the sum of its proper divisors (6835).

6385889 is a wasteful number, since it uses less digits than its factorization.

6385889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6834.

The product of its digits is 414720, while the sum is 47.

The square root of 6385889 is about 2527.0316578943. The cubic root of 6385889 is about 185.5269998939.

The spelling of 6385889 in words is "six million, three hundred eighty-five thousand, eight hundred eighty-nine".