6979889 has 8 divisors (see below), whose sum is σ = 8162880. Its totient is φ = 5843376.

The previous prime is 6979883. The next prime is 6979891. The reversal of 6979889 is 9889796.

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

It is not a de Polignac number, because 6979889 - 2¹⁶ = 6914353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6979883) 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, 11294 + ... + 11895.

It is an arithmetic number, because the mean of its divisors is an integer number (1020360).

Almost surely, 2^6979889 is an apocalyptic number.

It is an amenable number.

6979889 is a deficient number, since it is larger than the sum of its proper divisors (1182991).

6979889 is a wasteful number, since it uses less digits than its factorization.

6979889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23239.

The product of its digits is 1959552, while the sum is 56.

The square root of 6979889 is about 2641.9479555813. The cubic root of 6979889 is about 191.1097475140.

The spelling of 6979889 in words is "six million, nine hundred seventy-nine thousand, eight hundred eighty-nine".