3644004408 has 64 divisors (see below), whose sum is σ = 9945141120. Its totient is φ = 1103472000.

The previous prime is 3644004391. The next prime is 3644004409. The reversal of 3644004408 is 8044004463.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644004409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457258 + ... + 465158.

It is an arithmetic number, because the mean of its divisors is an integer number (155392830).

Almost surely, 2^3644004408 is an apocalyptic number.

It is an amenable number.

3644004408 is an abundant number, since it is smaller than the sum of its proper divisors (6301136712).

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

3644004408 is a wasteful number, since it uses less digits than its factorization.

3644004408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9668 (or 9664 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 3644004408 is about 60365.5896020241. The cubic root of 3644004408 is about 1538.8382208652.

The spelling of 3644004408 in words is "three billion, six hundred forty-four million, four thousand, four hundred eight".