6226391 has 2 divisors, whose sum is σ = 6226392. Its totient is φ = 6226390.

The previous prime is 6226379. The next prime is 6226393. The reversal of 6226391 is 1936226.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6226391 - 2¹⁸ = 5964247 is a prime.

Together with 6226393, 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 (6226393) 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, 3113195 + 3113196.

It is an arithmetic number, because the mean of its divisors is an integer number (3113196).

Almost surely, 2^6226391 is an apocalyptic number.

6226391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6226391 is an equidigital number, since it uses as much as digits as its factorization.

6226391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 6226391 is about 2495.2737324791. The cubic root of 6226391 is about 183.9693454761.

The spelling of 6226391 in words is "six million, two hundred twenty-six thousand, three hundred ninety-one".