404444004018 has 8 divisors (see below), whose sum is σ = 808888008048. Its totient is φ = 134814668004.

The previous prime is 404444004017. The next prime is 404444004031. The reversal of 404444004018 is 810400444404.

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

404444004018 is an admirable number.

It is a super-2 number, since 2×404444004018² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404444004018.

It is not an unprimeable number, because it can be changed into a prime (404444004017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33703666996 + ... + 33703667007.

It is an arithmetic number, because the mean of its divisors is an integer number (101111001006).

Almost surely, 2^404444004018 is an apocalyptic number.

404444004018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

404444004018 is a wasteful number, since it uses less digits than its factorization.

404444004018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67407334008.

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

The spelling of 404444004018 in words is "four hundred four billion, four hundred forty-four million, four thousand, eighteen".