6429191 has 2 divisors, whose sum is σ = 6429192. Its totient is φ = 6429190.

The previous prime is 6429187. The next prime is 6429193. The reversal of 6429191 is 1919246.

6429191 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 not a de Polignac number, because 6429191 - 2² = 6429187 is a prime.

Together with 6429193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6429193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214595 + 3214596.

It is an arithmetic number, because the mean of its divisors is an integer number (3214596).

Almost surely, 2^6429191 is an apocalyptic number.

6429191 is a deficient number, since it is larger than the sum of its proper divisors (1).

6429191 is an equidigital number, since it uses as much as digits as its factorization.

6429191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 32.

The square root of 6429191 is about 2535.5849423752. The cubic root of 6429191 is about 185.9454015567.

The spelling of 6429191 in words is "six million, four hundred twenty-nine thousand, one hundred ninety-one".