6404408 has 16 divisors (see below), whose sum is σ = 12264480. Its totient is φ = 3133888.

The previous prime is 6404407. The next prime is 6404449. The reversal of 6404408 is 8044046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404401) by changing a digit.

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, 8141 + ... + 8892.

It is an arithmetic number, because the mean of its divisors is an integer number (766530).

Almost surely, 2^6404408 is an apocalyptic number.

It is an amenable number.

6404408 is a deficient number, since it is larger than the sum of its proper divisors (5860072).

6404408 is a wasteful number, since it uses less digits than its factorization.

6404408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17086 (or 17082 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 6404408 is about 2530.6931856707. The cubic root of 6404408 is about 185.7061688197.

The spelling of 6404408 in words is "six million, four hundred four thousand, four hundred eight".