6404043 has 8 divisors (see below), whose sum is σ = 8700048. Its totient is φ = 4188704.

The previous prime is 6404023. The next prime is 6404059. The reversal of 6404043 is 3404046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6404043 - 2⁶ = 6403979 is a prime.

6404043 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6404003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19980 + ... + 20297.

It is an arithmetic number, because the mean of its divisors is an integer number (1087506).

Almost surely, 2^6404043 is an apocalyptic number.

6404043 is a deficient number, since it is larger than the sum of its proper divisors (2296005).

6404043 is a wasteful number, since it uses less digits than its factorization.

6404043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40333.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 6404043 is about 2530.6210700142. The cubic root of 6404043 is about 185.7026408308.

Adding to 6404043 its reverse (3404046), we get a palindrome (9808089).

The spelling of 6404043 in words is "six million, four hundred four thousand, forty-three".