404444040440 has 64 divisors (see below), whose sum is σ = 1002555364320. Its totient is φ = 145614400000.

The previous prime is 404444040391. The next prime is 404444040463. The reversal of 404444040440 is 44040444404.

It is a junction number, because it is equal to n+sod(n) for n = 404444040397 and 404444040406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4506011 + ... + 4594890.

Almost surely, 2^404444040440 is an apocalyptic number.

404444040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404444040440 is an abundant number, since it is smaller than the sum of its proper divisors (598111323880).

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

404444040440 is a wasteful number, since it uses less digits than its factorization.

404444040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101024 (or 9101020 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 404444040440 its reverse (44040444404), we get a palindrome (448484484844).

The spelling of 404444040440 in words is "four hundred four billion, four hundred forty-four million, forty thousand, four hundred forty".