6443894 has 8 divisors (see below), whose sum is σ = 9890760. Its totient is φ = 3146976.

The previous prime is 6443893. The next prime is 6443897. The reversal of 6443894 is 4983446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443893) 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, 37379 + ... + 37550.

It is an arithmetic number, because the mean of its divisors is an integer number (1236345).

Almost surely, 2^6443894 is an apocalyptic number.

6443894 is a deficient number, since it is larger than the sum of its proper divisors (3446866).

6443894 is a wasteful number, since it uses less digits than its factorization.

6443894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74974.

The product of its digits is 82944, while the sum is 38.

The square root of 6443894 is about 2538.4826176281. The cubic root of 6443894 is about 186.0870406202.

It can be divided in two parts, 6443 and 894, that added together give a palindrome (7337).

The spelling of 6443894 in words is "six million, four hundred forty-three thousand, eight hundred ninety-four".