6443447 has 2 divisors, whose sum is σ = 6443448. Its totient is φ = 6443446.

The previous prime is 6443429. The next prime is 6443461. The reversal of 6443447 is 7443446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6443447 - 2⁶ = 6443383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6443407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221723 + 3221724.

It is an arithmetic number, because the mean of its divisors is an integer number (3221724).

Almost surely, 2^6443447 is an apocalyptic number.

6443447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6443447 is an equidigital number, since it uses as much as digits as its factorization.

6443447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 32.

The square root of 6443447 is about 2538.3945713777. The cubic root of 6443447 is about 186.0827376925.

Subtracting 6443447 from its reverse (7443446), we obtain a palindrome (999999).

The spelling of 6443447 in words is "six million, four hundred forty-three thousand, four hundred forty-seven".