6959891 has 2 divisors, whose sum is σ = 6959892. Its totient is φ = 6959890.

The previous prime is 6959881. The next prime is 6959921. The reversal of 6959891 is 1989596.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6959891 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6959831) 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 as a sum of consecutive naturals, namely, 3479945 + 3479946.

It is an arithmetic number, because the mean of its divisors is an integer number (3479946).

Almost surely, 2^6959891 is an apocalyptic number.

6959891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6959891 is an equidigital number, since it uses as much as digits as its factorization.

6959891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 47.

The square root of 6959891 is about 2638.1605334020. The cubic root of 6959891 is about 190.9270574790.

The spelling of 6959891 in words is "six million, nine hundred fifty-nine thousand, eight hundred ninety-one".