6443291 has 4 divisors (see below), whose sum is σ = 6617472. Its totient is φ = 6269112.

The previous prime is 6443287. The next prime is 6443293. The reversal of 6443291 is 1923446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6443291 - 2² = 6443287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6443293) 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, 87035 + ... + 87108.

It is an arithmetic number, because the mean of its divisors is an integer number (1654368).

Almost surely, 2^6443291 is an apocalyptic number.

6443291 is a deficient number, since it is larger than the sum of its proper divisors (174181).

6443291 is a wasteful number, since it uses less digits than its factorization.

6443291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174180.

The product of its digits is 5184, while the sum is 29.

The square root of 6443291 is about 2538.3638431084. The cubic root of 6443291 is about 186.0812359528.

The spelling of 6443291 in words is "six million, four hundred forty-three thousand, two hundred ninety-one".