6889447 has 4 divisors (see below), whose sum is σ = 6894720. Its totient is φ = 6884176.

The previous prime is 6889433. The next prime is 6889451. The reversal of 6889447 is 7449886.

It is a happy number.

6889447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7449886 = 2 ⋅3724943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6889447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6889397 and 6889406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6889427) 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, 954 + ... + 3832.

It is an arithmetic number, because the mean of its divisors is an integer number (1723680).

Almost surely, 2^6889447 is an apocalyptic number.

6889447 is a deficient number, since it is larger than the sum of its proper divisors (5273).

6889447 is a wasteful number, since it uses less digits than its factorization.

6889447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272.

The product of its digits is 387072, while the sum is 46.

The square root of 6889447 is about 2624.7756094569. The cubic root of 6889447 is about 190.2807207711.

The spelling of 6889447 in words is "six million, eight hundred eighty-nine thousand, four hundred forty-seven".