408604406803 has 4 divisors (see below), whose sum is σ = 408608811288. Its totient is φ = 408600002320.

The previous prime is 408604406759. The next prime is 408604406809. The reversal of 408604406803 is 308604406804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 408604406803 - 2²¹ = 408602309651 is a prime.

It is a super-2 number, since 2×408604406803² (a number of 24 digits) contains 22 as substring.

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 408604406803.

It is not an unprimeable number, because it can be changed into a prime (408604406809) 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 3 ways as a sum of consecutive naturals, for example, 2060026 + ... + 2249647.

It is an arithmetic number, because the mean of its divisors is an integer number (102152202822).

Almost surely, 2^408604406803 is an apocalyptic number.

408604406803 is a deficient number, since it is larger than the sum of its proper divisors (4404485).

408604406803 is an equidigital number, since it uses as much as digits as its factorization.

408604406803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404484.

The product of its (nonzero) digits is 442368, while the sum is 43.

Subtracting from 408604406803 its reverse (308604406804), we obtain a palindrome (99999999999).

The spelling of 408604406803 in words is "four hundred eight billion, six hundred four million, four hundred six thousand, eight hundred three".