6847989 has 8 divisors (see below), whose sum is σ = 9142752. Its totient is φ = 4559280.

The previous prime is 6847979. The next prime is 6848027. The reversal of 6847989 is 9897486.

It is a happy number.

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

It is not a de Polignac number, because 6847989 - 2¹¹ = 6845941 is a prime.

6847989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6847949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3574 + ... + 5144.

It is an arithmetic number, because the mean of its divisors is an integer number (1142844).

Almost surely, 2^6847989 is an apocalyptic number.

It is an amenable number.

6847989 is a deficient number, since it is larger than the sum of its proper divisors (2294763).

6847989 is a wasteful number, since it uses less digits than its factorization.

6847989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027.

The product of its digits is 870912, while the sum is 51.

The square root of 6847989 is about 2616.8662556577. The cubic root of 6847989 is about 189.8982742624.

The spelling of 6847989 in words is "six million, eight hundred forty-seven thousand, nine hundred eighty-nine".