6444904 has 16 divisors (see below), whose sum is σ = 12795300. Its totient is φ = 3032832.

The previous prime is 6444871. The next prime is 6444937. The reversal of 6444904 is 4094446.

It is an interprime number because it is at equal distance from previous prime (6444871) and next prime (6444937).

It can be written as a sum of positive squares in 2 ways, for example, as 6260004 + 184900 = 2502^2 + 430^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 23559 + ... + 23830.

Almost surely, 2^6444904 is an apocalyptic number.

It is an amenable number.

6444904 is a deficient number, since it is larger than the sum of its proper divisors (6350396).

6444904 is a wasteful number, since it uses less digits than its factorization.

6444904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47412 (or 47408 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 6444904 is about 2538.6815475754. The cubic root of 6444904 is about 186.0967623864.

The spelling of 6444904 in words is "six million, four hundred forty-four thousand, nine hundred four".