6400404001 has 8 divisors (see below), whose sum is σ = 6787649664. Its totient is φ = 6014352960.

The previous prime is 6400403981. The next prime is 6400404053. The reversal of 6400404001 is 1004040046.

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 6400404001 - 2⁷ = 6400403873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6400404001.

It is not an unprimeable number, because it can be changed into a prime (6400404071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287605 + ... + 309058.

It is an arithmetic number, because the mean of its divisors is an integer number (848456208).

Almost surely, 2^6400404001 is an apocalyptic number.

It is an amenable number.

6400404001 is a deficient number, since it is larger than the sum of its proper divisors (387245663).

6400404001 is a wasteful number, since it uses less digits than its factorization.

6400404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597311.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 6400404001 is about 80002.5249664034. The cubic root of 6400404001 is about 1856.6745994258.

Adding to 6400404001 its reverse (1004040046), we get a palindrome (7404444047).

The spelling of 6400404001 in words is "six billion, four hundred million, four hundred four thousand, one".