6396191 has 2 divisors, whose sum is σ = 6396192. Its totient is φ = 6396190.

The previous prime is 6396167. The next prime is 6396223. The reversal of 6396191 is 1916936.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6396191 is a prime.

It is a super-2 number, since 2×6396191² = 81822518616962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6396151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3198095 + 3198096.

It is an arithmetic number, because the mean of its divisors is an integer number (3198096).

Almost surely, 2^6396191 is an apocalyptic number.

6396191 is a deficient number, since it is larger than the sum of its proper divisors (1).

6396191 is an equidigital number, since it uses as much as digits as its factorization.

6396191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The square root of 6396191 is about 2529.0691963645. The cubic root of 6396191 is about 185.6267130936.

The spelling of 6396191 in words is "six million, three hundred ninety-six thousand, one hundred ninety-one".