3644944 has 40 divisors (see below), whose sum is σ = 7463808. Its totient is φ = 1722240.

The previous prime is 3644899. The next prime is 3644947. The reversal of 3644944 is 4494463.

It is a happy number.

3644944 is nontrivially palindromic in base 15.

3644944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3644947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27759 + ... + 27889.

Almost surely, 2^3644944 is an apocalyptic number.

It is an amenable number.

3644944 is an abundant number, since it is smaller than the sum of its proper divisors (3818864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3644944 is a wasteful number, since it uses less digits than its factorization.

3644944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 217 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 3644944 is about 1909.1736432289. The cubic root of 3644944 is about 153.8970470598.

It can be divided in two parts, 36 and 44944, that multiplied together give a square (1617984 = 1272²).

The spelling of 3644944 in words is "three million, six hundred forty-four thousand, nine hundred forty-four".