3800644 has 6 divisors (see below), whose sum is σ = 6651134. Its totient is φ = 1900320.

The previous prime is 3800633. The next prime is 3800647. The reversal of 3800644 is 4460083.

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 114244 = 1920^2 + 338^2 .

It is not an unprimeable number, because it can be changed into a prime (3800647) 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 as a sum of consecutive naturals, namely, 475077 + ... + 475084.

Almost surely, 2^3800644 is an apocalyptic number.

It is an amenable number.

3800644 is a deficient number, since it is larger than the sum of its proper divisors (2850490).

3800644 is a wasteful number, since it uses less digits than its factorization.

3800644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950165 (or 950163 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 3800644 is about 1949.5240444785. The cubic root of 3800644 is about 156.0578899767.

It can be divided in two parts, 3800 and 644, that added together give a palindrome (4444).

The spelling of 3800644 in words is "three million, eight hundred thousand, six hundred forty-four".