6389965 has 4 divisors (see below), whose sum is σ = 7667964. Its totient is φ = 5111968.

The previous prime is 6389963. The next prime is 6389983. The reversal of 6389965 is 5699836.

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 3493161 + 2896804 = 1869^2 + 1702^2 .

It is a cyclic number.

It is not a de Polignac number, because 6389965 - 2¹ = 6389963 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 (6389963) 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, 638992 + ... + 639001.

It is an arithmetic number, because the mean of its divisors is an integer number (1916991).

Almost surely, 2^6389965 is an apocalyptic number.

It is an amenable number.

6389965 is a deficient number, since it is larger than the sum of its proper divisors (1277999).

6389965 is a wasteful number, since it uses less digits than its factorization.

6389965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277998.

The product of its digits is 349920, while the sum is 46.

The square root of 6389965 is about 2527.8380090504. The cubic root of 6389965 is about 185.5664643661.

The spelling of 6389965 in words is "six million, three hundred eighty-nine thousand, nine hundred sixty-five".