6443441 has 4 divisors (see below), whose sum is σ = 6448884. Its totient is φ = 6438000.

The previous prime is 6443429. The next prime is 6443447. The reversal of 6443441 is 1443446.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 802816 + 5640625 = 896^2 + 2375^2 .

It is a cyclic number.

It is not a de Polignac number, because 6443441 - 2⁶ = 6443377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6443441.

It is not an unprimeable number, because it can be changed into a prime (6443447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110 + ... + 3591.

It is an arithmetic number, because the mean of its divisors is an integer number (1612221).

Almost surely, 2^6443441 is an apocalyptic number.

It is an amenable number.

6443441 is a deficient number, since it is larger than the sum of its proper divisors (5443).

6443441 is a wasteful number, since it uses less digits than its factorization.

6443441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5442.

The product of its digits is 4608, while the sum is 26.

The square root of 6443441 is about 2538.3933895281. The cubic root of 6443441 is about 186.0826799337.

Adding to 6443441 its reverse (1443446), we get a palindrome (7886887).

The spelling of 6443441 in words is "six million, four hundred forty-three thousand, four hundred forty-one".