6404844 has 12 divisors (see below), whose sum is σ = 14944664. Its totient is φ = 2134944.

The previous prime is 6404837. The next prime is 6404873. The reversal of 6404844 is 4484046.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266857 + ... + 266880.

Almost surely, 2^6404844 is an apocalyptic number.

It is an amenable number.

6404844 is an abundant number, since it is smaller than the sum of its proper divisors (8539820).

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

6404844 is a wasteful number, since it uses less digits than its factorization.

6404844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533744 (or 533742 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 6404844 is about 2530.7793266107. The cubic root of 6404844 is about 185.7103828991.

The spelling of 6404844 in words is "six million, four hundred four thousand, eight hundred forty-four".