404448081 has 8 divisors (see below), whose sum is σ = 539398080. Its totient is φ = 269565072.

The previous prime is 404448061. The next prime is 404448089. The reversal of 404448081 is 180844404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404448081 - 2⁶ = 404448017 is a prime.

It is a super-2 number, since 2×404448081² = 327156500449165122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404448089) 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 7 ways as a sum of consecutive naturals, for example, 370 + ... + 28443.

It is an arithmetic number, because the mean of its divisors is an integer number (67424760).

Almost surely, 2^404448081 is an apocalyptic number.

It is an amenable number.

404448081 is a deficient number, since it is larger than the sum of its proper divisors (134949999).

404448081 is a wasteful number, since it uses less digits than its factorization.

404448081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33495.

The product of its (nonzero) digits is 16384, while the sum is 33.

The square root of 404448081 is about 20110.8945847767. The cubic root of 404448081 is about 739.5273832675.

It can be divided in two parts, 4044 and 48081, that added together give a palindrome (52125).

The spelling of 404448081 in words is "four hundred four million, four hundred forty-eight thousand, eighty-one".