444404040440 has 32 divisors (see below), whose sum is σ = 999945006480. Its totient is φ = 177755231232.

The previous prime is 444404040439. The next prime is 444404040449. The reversal of 444404040440 is 44040404444.

It is a junction number, because it is equal to n+sod(n) for n = 444404040397 and 444404040406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444404040449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020047 + ... + 1388993.

Almost surely, 2^444404040440 is an apocalyptic number.

444404040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444404040440 is an abundant number, since it is smaller than the sum of its proper divisors (555540966040).

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

444404040440 is a wasteful number, since it uses less digits than its factorization.

444404040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399071 (or 399067 counting only the distinct ones).

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

Adding to 444404040440 its reverse (44040404444), we get a palindrome (488444444884).

It can be divided in two parts, 4 and 44404040440, that added together give a palindrome (44404040444).

The spelling of 444404040440 in words is "four hundred forty-four billion, four hundred four million, forty thousand, four hundred forty".