408404861394 has 8 divisors (see below), whose sum is σ = 816809722800. Its totient is φ = 136134953796.

The previous prime is 408404861351. The next prime is 408404861407. The reversal of 408404861394 is 493168404804.

It is a happy number.

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

408404861394 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34033738444 + ... + 34033738455.

It is an arithmetic number, because the mean of its divisors is an integer number (102101215350).

Almost surely, 2^408404861394 is an apocalyptic number.

408404861394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

408404861394 is a wasteful number, since it uses less digits than its factorization.

408404861394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68067476904.

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 408404861394 in words is "four hundred eight billion, four hundred four million, eight hundred sixty-one thousand, three hundred ninety-four".