6404135404 has 6 divisors (see below), whose sum is σ = 11207236964. Its totient is φ = 3202067700.

The previous prime is 6404135393. The next prime is 6404135407. The reversal of 6404135404 is 4045314046.

It is not an unprimeable number, because it can be changed into a prime (6404135407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800516922 + ... + 800516929.

Almost surely, 2^6404135404 is an apocalyptic number.

It is an amenable number.

6404135404 is a deficient number, since it is larger than the sum of its proper divisors (4803101560).

6404135404 is a wasteful number, since it uses less digits than its factorization.

6404135404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601033855 (or 1601033853 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 6404135404 is about 80025.8421011613. The cubic root of 6404135404 is about 1857.0353399497.

The spelling of 6404135404 in words is "six billion, four hundred four million, one hundred thirty-five thousand, four hundred four".