444404440 has 16 divisors (see below), whose sum is σ = 999910080. Its totient is φ = 177761760.

The previous prime is 444404423. The next prime is 444404449. The reversal of 444404440 is 44404444.

It is a junction number, because it is equal to n+sod(n) for n = 444404399 and 444404408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444404449) 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, 5555016 + ... + 5555095.

It is an arithmetic number, because the mean of its divisors is an integer number (62494380).

Almost surely, 2^444404440 is an apocalyptic number.

444404440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444404440 is an abundant number, since it is smaller than the sum of its proper divisors (555505640).

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

444404440 is a wasteful number, since it uses less digits than its factorization.

444404440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110122 (or 11110118 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 444404440 is about 21080.9022577308. The cubic root of 444404440 is about 763.1199308532.

Adding to 444404440 its reverse (44404444), we get a palindrome (488808884).

The spelling of 444404440 in words is "four hundred forty-four million, four hundred four thousand, four hundred forty".