6871399 has 2 divisors, whose sum is σ = 6871400. Its totient is φ = 6871398.

The previous prime is 6871351. The next prime is 6871421. The reversal of 6871399 is 9931786.

6871399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6871399 is a prime.

It is a super-2 number, since 2×6871399² = 94432248434402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6871699) 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, 3435699 + 3435700.

It is an arithmetic number, because the mean of its divisors is an integer number (3435700).

Almost surely, 2^6871399 is an apocalyptic number.

6871399 is a deficient number, since it is larger than the sum of its proper divisors (1).

6871399 is an equidigital number, since it uses as much as digits as its factorization.

6871399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 6871399 is about 2621.3353467269. The cubic root of 6871399 is about 190.1144186175.

The spelling of 6871399 in words is "six million, eight hundred seventy-one thousand, three hundred ninety-nine".