6889859 has 2 divisors, whose sum is σ = 6889860. Its totient is φ = 6889858.

The previous prime is 6889853. The next prime is 6889873. The reversal of 6889859 is 9589886.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6889859 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 6² + 8 + 8 + 9⁴ + 8⁷ + 5⁵ + 9⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 6889859.

It is not a weakly prime, because it can be changed into another prime (6889853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444929 + 3444930.

It is an arithmetic number, because the mean of its divisors is an integer number (3444930).

Almost surely, 2^6889859 is an apocalyptic number.

6889859 is a deficient number, since it is larger than the sum of its proper divisors (1).

6889859 is an equidigital number, since it uses as much as digits as its factorization.

6889859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 53.

The square root of 6889859 is about 2624.8540911830. The cubic root of 6889859 is about 190.2845137265.

The spelling of 6889859 in words is "six million, eight hundred eighty-nine thousand, eight hundred fifty-nine".