6879869 has 2 divisors, whose sum is σ = 6879870. Its totient is φ = 6879868.

The previous prime is 6879857. The next prime is 6879889. The reversal of 6879869 is 9689786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5938969 + 940900 = 2437^2 + 970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6879869 is a prime.

It is a super-2 number, since 2×6879869² = 94665194914322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6879869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6879839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439934 + 3439935.

It is an arithmetic number, because the mean of its divisors is an integer number (3439935).

Almost surely, 2^6879869 is an apocalyptic number.

It is an amenable number.

6879869 is a deficient number, since it is larger than the sum of its proper divisors (1).

6879869 is an equidigital number, since it uses as much as digits as its factorization.

6879869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The square root of 6879869 is about 2622.9504379610. The cubic root of 6879869 is about 190.1925011132.

The spelling of 6879869 in words is "six million, eight hundred seventy-nine thousand, eight hundred sixty-nine".