6424447 has 2 divisors, whose sum is σ = 6424448. Its totient is φ = 6424446.

The previous prime is 6424427. The next prime is 6424463. The reversal of 6424447 is 7444246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6424447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6424427) 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, 3212223 + 3212224.

It is an arithmetic number, because the mean of its divisors is an integer number (3212224).

Almost surely, 2^6424447 is an apocalyptic number.

6424447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6424447 is an equidigital number, since it uses as much as digits as its factorization.

6424447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 31.

The square root of 6424447 is about 2534.6492854042. The cubic root of 6424447 is about 185.8996548968.

The spelling of 6424447 in words is "six million, four hundred twenty-four thousand, four hundred forty-seven".