408406218799 has 8 divisors (see below), whose sum is σ = 422120966400. Its totient is φ = 394900856856.

The previous prime is 408406218797. The next prime is 408406218817. The reversal of 408406218799 is 997812604804.

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 408406218799 - 2¹ = 408406218797 is a prime.

It is a super-2 number, since 2×408406218799² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408406218797) 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, 52342449 + ... + 52350250.

It is an arithmetic number, because the mean of its divisors is an integer number (52765120800).

Almost surely, 2^408406218799 is an apocalyptic number.

408406218799 is a deficient number, since it is larger than the sum of its proper divisors (13714747601).

408406218799 is a wasteful number, since it uses less digits than its factorization.

408406218799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104692829.

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 408406218799 in words is "four hundred eight billion, four hundred six million, two hundred eighteen thousand, seven hundred ninety-nine".