404444481 has 12 divisors (see below), whose sum is σ = 627301872. Its totient is φ = 231111048.

The previous prime is 404444473. The next prime is 404444497. The reversal of 404444481 is 184444404.

It is not a de Polignac number, because 404444481 - 2³ = 404444473 is a prime.

It is a super-2 number, since 2×404444481² = 327150676422718722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (404444401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1375515 + ... + 1375808.

It is an arithmetic number, because the mean of its divisors is an integer number (52275156).

Almost surely, 2^404444481 is an apocalyptic number.

It is an amenable number.

404444481 is a deficient number, since it is larger than the sum of its proper divisors (222857391).

404444481 is a wasteful number, since it uses less digits than its factorization.

404444481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751340 (or 2751333 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 33.

The square root of 404444481 is about 20110.8050808514. The cubic root of 404444481 is about 739.5251890785.

Adding to 404444481 its reverse (184444404), we get a palindrome (588888885).

The spelling of 404444481 in words is "four hundred four million, four hundred forty-four thousand, four hundred eighty-one".