404442001 has 8 divisors (see below), whose sum is σ = 409979520. Its totient is φ = 398915088.

The previous prime is 404441981. The next prime is 404442013. The reversal of 404442001 is 100244404.

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

It is a cyclic number.

It is not a de Polignac number, because 404442001 - 2⁵ = 404441969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404442001.

It is not an unprimeable number, because it can be changed into a prime (404448001) 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, 101295 + ... + 105211.

It is an arithmetic number, because the mean of its divisors is an integer number (51247440).

Almost surely, 2^404442001 is an apocalyptic number.

It is an amenable number.

404442001 is a deficient number, since it is larger than the sum of its proper divisors (5537519).

404442001 is a wasteful number, since it uses less digits than its factorization.

404442001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 404442001 is about 20110.7434223601. The cubic root of 404442001 is about 739.5236775186.

Adding to 404442001 its reverse (100244404), we get a palindrome (504686405).

The spelling of 404442001 in words is "four hundred four million, four hundred forty-two thousand, one".