404455442 has 16 divisors (see below), whose sum is σ = 610326360. Its totient is φ = 201017472.

The previous prime is 404455433. The next prime is 404455453. The reversal of 404455442 is 244554404.

It can be written as a sum of positive squares in 4 ways, for example, as 278589481 + 125865961 = 16691^2 + 11219^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404455399 and 404455408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332828 + ... + 334040.

Almost surely, 2^404455442 is an apocalyptic number.

404455442 is a deficient number, since it is larger than the sum of its proper divisors (205870918).

404455442 is a wasteful number, since it uses less digits than its factorization.

404455442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077.

The product of its (nonzero) digits is 51200, while the sum is 32.

The square root of 404455442 is about 20111.0775942017. The cubic root of 404455442 is about 739.5318697337.

The spelling of 404455442 in words is "four hundred four million, four hundred fifty-five thousand, four hundred forty-two".