6919879 has 2 divisors, whose sum is σ = 6919880. Its totient is φ = 6919878.

The previous prime is 6919853. The next prime is 6919897. The reversal of 6919879 is 9789196.

Together with next prime (6919897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6919879 - 2⁷ = 6919751 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6919279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3459939 + 3459940.

It is an arithmetic number, because the mean of its divisors is an integer number (3459940).

Almost surely, 2^6919879 is an apocalyptic number.

6919879 is a deficient number, since it is larger than the sum of its proper divisors (1).

6919879 is an equidigital number, since it uses as much as digits as its factorization.

6919879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 49.

The square root of 6919879 is about 2630.5662888435. The cubic root of 6919879 is about 190.5604779931.

The spelling of 6919879 in words is "six million, nine hundred nineteen thousand, eight hundred seventy-nine".