404440442244 has 36 divisors (see below), whose sum is σ = 1025601838716. Its totient is φ = 134382763008.

The previous prime is 404440442243. The next prime is 404440442291. The reversal of 404440442244 is 442244044404.

404440442244 is a `hidden beast` number, since 4 + 0 + 4 + 4 + 404 + 4 + 2 + 244 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19343246400 + 385097195844 = 139080^2 + 620562^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 404440442199 and 404440442208.

It is not an unprimeable number, because it can be changed into a prime (404440442243) 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, 17935149 + ... + 17957684.

Almost surely, 2^404440442244 is an apocalyptic number.

It is an amenable number.

404440442244 is an abundant number, since it is smaller than the sum of its proper divisors (621161396472).

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

404440442244 is a wasteful number, since it uses less digits than its factorization.

404440442244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35893156 (or 35893151 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 36.

Adding to 404440442244 its reverse (442244044404), we get a palindrome (846684486648).

The spelling of 404440442244 in words is "four hundred four billion, four hundred forty million, four hundred forty-two thousand, two hundred forty-four".