3644404004 has 24 divisors (see below), whose sum is σ = 6675160128. Its totient is φ = 1737695520.

The previous prime is 3644403979. The next prime is 3644404031. The reversal of 3644404004 is 4004044463.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29387 + ... + 90290.

It is an arithmetic number, because the mean of its divisors is an integer number (278131672).

Almost surely, 2^3644404004 is an apocalyptic number.

It is an amenable number.

3644404004 is a deficient number, since it is larger than the sum of its proper divisors (3030756124).

3644404004 is a wasteful number, since it uses less digits than its factorization.

3644404004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120035 (or 120033 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

The square root of 3644404004 is about 60368.8993108206. The cubic root of 3644404004 is about 1538.8944676982.

Adding to 3644404004 its reverse (4004044463), we get a palindrome (7648448467).

The spelling of 3644404004 in words is "three billion, six hundred forty-four million, four hundred four thousand, four".