408444444448 has 24 divisors (see below), whose sum is σ = 815140415628. Its totient is φ = 201424656384.

The previous prime is 408444444431. The next prime is 408444444479. The reversal of 408444444448 is 844444444804.

It can be written as a sum of positive squares in 2 ways, for example, as 338691408784 + 69753035664 = 581972^2 + 264108^2 .

It is a junction number, because it is equal to n+sod(n) for n = 408444444395 and 408444444404.

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, 87421561 + ... + 87426232.

Almost surely, 2^408444444448 is an apocalyptic number.

It is an amenable number.

408444444448 is a deficient number, since it is larger than the sum of its proper divisors (406695971180).

408444444448 is a wasteful number, since it uses less digits than its factorization.

408444444448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174847876 (or 174847868 counting only the distinct ones).

The product of its (nonzero) digits is 16777216, while the sum is 52.

The spelling of 408444444448 in words is "four hundred eight billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-eight".