408426806394 has 24 divisors (see below), whose sum is σ = 890863845300. Its totient is φ = 135228561408.

The previous prime is 408426806387. The next prime is 408426806419. The reversal of 408426806394 is 493608624804.

408426806394 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 396389864025 + 12036942369 = 629595^2 + 109713^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 408426806394.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76139527 + ... + 76144890.

Almost surely, 2^408426806394 is an apocalyptic number.

408426806394 is an abundant number, since it is smaller than the sum of its proper divisors (482437038906).

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

408426806394 is a wasteful number, since it uses less digits than its factorization.

408426806394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152284574 (or 152284571 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 408426806394 in words is "four hundred eight billion, four hundred twenty-six million, eight hundred six thousand, three hundred ninety-four".