5643944 has 8 divisors (see below), whose sum is σ = 10582410. Its totient is φ = 2821968.

The previous prime is 5643923. The next prime is 5643961. The reversal of 5643944 is 4493465.

It can be written as a sum of positive squares in only one way, i.e., 3204100 + 2439844 = 1790^2 + 1562^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 352739 + ... + 352754.

Almost surely, 2^5643944 is an apocalyptic number.

It is an amenable number.

5643944 is a deficient number, since it is larger than the sum of its proper divisors (4938466).

5643944 is a wasteful number, since it uses less digits than its factorization.

5643944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705499 (or 705495 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 5643944 is about 2375.6986340864. The cubic root of 5643944 is about 178.0440912532.

The spelling of 5643944 in words is "five million, six hundred forty-three thousand, nine hundred forty-four".