3644443 has 8 divisors (see below), whose sum is σ = 4209840. Its totient is φ = 3118080.

The previous prime is 3644437. The next prime is 3644479. The reversal of 3644443 is 3444463.

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

It is a cyclic number.

It is not a de Polignac number, because 3644443 - 2⁵ = 3644411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3644423) 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 in 7 ways as a sum of consecutive naturals, for example, 9558 + ... + 9931.

It is an arithmetic number, because the mean of its divisors is an integer number (526230).

Almost surely, 2^3644443 is an apocalyptic number.

3644443 is a deficient number, since it is larger than the sum of its proper divisors (565397).

3644443 is a wasteful number, since it uses less digits than its factorization.

3644443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19517.

The product of its digits is 13824, while the sum is 28.

The square root of 3644443 is about 1909.0424301204. The cubic root of 3644443 is about 153.8899956526.

It can be divided in two parts, 3 and 644443, that added together give a palindrome (644446).

The spelling of 3644443 in words is "three million, six hundred forty-four thousand, four hundred forty-three".