404031444 has 12 divisors (see below), whose sum is σ = 942740064. Its totient is φ = 134677144.

The previous prime is 404031403. The next prime is 404031457. The reversal of 404031444 is 444130404.

It is a tau number, because it is divible by the number of its divisors (12).

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, 16834632 + ... + 16834655.

It is an arithmetic number, because the mean of its divisors is an integer number (78561672).

Almost surely, 2^404031444 is an apocalyptic number.

It is an amenable number.

404031444 is an abundant number, since it is smaller than the sum of its proper divisors (538708620).

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

404031444 is a wasteful number, since it uses less digits than its factorization.

404031444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33669294 (or 33669292 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 404031444 is about 20100.5334257576. The cubic root of 404031444 is about 739.2733578062.

Adding to 404031444 its reverse (444130404), we get a palindrome (848161848).

The spelling of 404031444 in words is "four hundred four million, thirty-one thousand, four hundred forty-four".