408440404 has 6 divisors (see below), whose sum is σ = 714770714. Its totient is φ = 204220200.

The previous prime is 408440381. The next prime is 408440411. The reversal of 408440404 is 404044804.

It can be written as a sum of positive squares in only one way, i.e., 349764804 + 58675600 = 18702^2 + 7660^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055047 + ... + 51055054.

Almost surely, 2^408440404 is an apocalyptic number.

It is an amenable number.

408440404 is a deficient number, since it is larger than the sum of its proper divisors (306330310).

408440404 is a wasteful number, since it uses less digits than its factorization.

408440404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102110105 (or 102110103 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 408440404 is about 20209.9085599119. The cubic root of 408440404 is about 741.9527218298.

The spelling of 408440404 in words is "four hundred eight million, four hundred forty thousand, four hundred four".