6889879 has 4 divisors (see below), whose sum is σ = 7295184. Its totient is φ = 6484576.

The previous prime is 6889873. The next prime is 6889891. The reversal of 6889879 is 9789886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9789886 = 2 ⋅4894943.

It is a cyclic number.

It is not a de Polignac number, because 6889879 - 2⁹ = 6889367 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 (6889873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202627 + ... + 202660.

It is an arithmetic number, because the mean of its divisors is an integer number (1823796).

Almost surely, 2^6889879 is an apocalyptic number.

6889879 is a deficient number, since it is larger than the sum of its proper divisors (405305).

6889879 is a wasteful number, since it uses less digits than its factorization.

6889879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405304.

The product of its digits is 1741824, while the sum is 55.

The square root of 6889879 is about 2624.8579009158. The cubic root of 6889879 is about 190.2846978466.

The spelling of 6889879 in words is "six million, eight hundred eighty-nine thousand, eight hundred seventy-nine".