404404434 has 32 divisors (see below), whose sum is σ = 1027059840. Its totient is φ = 115544016.

The previous prime is 404404433. The next prime is 404404439. The reversal of 404404434 is 434404404.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 404404398 and 404404407.

It is not an unprimeable number, because it can be changed into a prime (404404433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534549 + ... + 535304.

It is an arithmetic number, because the mean of its divisors is an integer number (32095620).

Almost surely, 2^404404434 is an apocalyptic number.

404404434 is an abundant number, since it is smaller than the sum of its proper divisors (622655406).

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

404404434 is a wasteful number, since it uses less digits than its factorization.

404404434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069871 (or 1069865 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 404404434 is about 20109.8093974060. The cubic root of 404404434 is about 739.5007796773.

Adding to 404404434 its reverse (434404404), we get a palindrome (838808838).

The spelling of 404404434 in words is "four hundred four million, four hundred four thousand, four hundred thirty-four".