408378197944 has 16 divisors (see below), whose sum is σ = 771554230920. Its totient is φ = 202630403040.

The previous prime is 408378197939. The next prime is 408378197959. The reversal of 408378197944 is 449791873804.

It is a happy number.

It is a congruent 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, 194835879 + ... + 194837974.

Almost surely, 2^408378197944 is an apocalyptic number.

It is an amenable number.

408378197944 is a deficient number, since it is larger than the sum of its proper divisors (363176032976).

408378197944 is a wasteful number, since it uses less digits than its factorization.

408378197944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389673990 (or 389673986 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 408378197944 in words is "four hundred eight billion, three hundred seventy-eight million, one hundred ninety-seven thousand, nine hundred forty-four".