6396889 has 4 divisors (see below), whose sum is σ = 6407424. Its totient is φ = 6386356.

The previous prime is 6396877. The next prime is 6396911. The reversal of 6396889 is 9886936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6396889 - 2⁵ = 6396857 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6396869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4297 + ... + 5590.

It is an arithmetic number, because the mean of its divisors is an integer number (1601856).

Almost surely, 2^6396889 is an apocalyptic number.

It is an amenable number.

6396889 is a deficient number, since it is larger than the sum of its proper divisors (10535).

6396889 is an equidigital number, since it uses as much as digits as its factorization.

6396889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10534.

The product of its digits is 559872, while the sum is 49.

The square root of 6396889 is about 2529.2071880334. The cubic root of 6396889 is about 185.6334651711.

The spelling of 6396889 in words is "six million, three hundred ninety-six thousand, eight hundred eighty-nine".