404581001 has 8 divisors (see below), whose sum is σ = 456580800. Its totient is φ = 355117840.

The previous prime is 404580997. The next prime is 404581027. The reversal of 404581001 is 100185404.

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

It is not a de Polignac number, because 404581001 - 2² = 404580997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404581081) 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, 633821 + ... + 634458.

It is an arithmetic number, because the mean of its divisors is an integer number (57072600).

Almost surely, 2^404581001 is an apocalyptic number.

It is an amenable number.

404581001 is a deficient number, since it is larger than the sum of its proper divisors (51999799).

404581001 is a wasteful number, since it uses less digits than its factorization.

404581001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268319.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 404581001 is about 20114.1989897684. The cubic root of 404581001 is about 739.6083884842.

The spelling of 404581001 in words is "four hundred four million, five hundred eighty-one thousand, one".