6404499 has 12 divisors (see below), whose sum is σ = 9282000. Its totient is φ = 4255344.

The previous prime is 6404477. The next prime is 6404521. The reversal of 6404499 is 9944046.

6404499 is a `hidden beast` number, since 640 + 4 + 4 + 9 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (6404477) and next prime (6404521).

It is not a de Polignac number, because 6404499 - 2⁸ = 6404243 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6404449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2122 + ... + 4160.

It is an arithmetic number, because the mean of its divisors is an integer number (773500).

Almost surely, 2^6404499 is an apocalyptic number.

6404499 is a deficient number, since it is larger than the sum of its proper divisors (2877501).

6404499 is a wasteful number, since it uses less digits than its factorization.

6404499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6404499 is about 2530.7111648705. The cubic root of 6404499 is about 185.7070483796.

It can be divided in two parts, 6404 and 499, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 6404499 in words is "six million, four hundred four thousand, four hundred ninety-nine".