3644044447 has 8 divisors (see below), whose sum is σ = 3845964800. Its totient is φ = 3443136984.

The previous prime is 3644044429. The next prime is 3644044457. The reversal of 3644044447 is 7444404463.

It is a happy number.

3644044447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3644044447 - 2⁷ = 3644044319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644044457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245823 + ... + 260224.

It is an arithmetic number, because the mean of its divisors is an integer number (480745600).

Almost surely, 2^3644044447 is an apocalyptic number.

3644044447 is a deficient number, since it is larger than the sum of its proper divisors (201920353).

3644044447 is a wasteful number, since it uses less digits than its factorization.

3644044447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506445.

The product of its (nonzero) digits is 516096, while the sum is 40.

The square root of 3644044447 is about 60365.9212387254. The cubic root of 3644044447 is about 1538.8438569102.

The spelling of 3644044447 in words is "three billion, six hundred forty-four million, forty-four thousand, four hundred forty-seven".