6450391 has 2 divisors, whose sum is σ = 6450392. Its totient is φ = 6450390.

The previous prime is 6450349. The next prime is 6450413. The reversal of 6450391 is 1930546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6450391 - 2¹⁵ = 6417623 is a prime.

It is a Chen prime.

6450391 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6450331) 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, 3225195 + 3225196.

It is an arithmetic number, because the mean of its divisors is an integer number (3225196).

Almost surely, 2^6450391 is an apocalyptic number.

6450391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6450391 is an equidigital number, since it uses as much as digits as its factorization.

6450391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 6450391 is about 2539.7619967233. The cubic root of 6450391 is about 186.1495598261.

The spelling of 6450391 in words is "six million, four hundred fifty thousand, three hundred ninety-one".