444040420 has 12 divisors (see below), whose sum is σ = 932484924. Its totient is φ = 177616160.

The previous prime is 444040417. The next prime is 444040439. The reversal of 444040420 is 24040444.

It can be written as a sum of positive squares in 2 ways, for example, as 162001984 + 282038436 = 12728^2 + 16794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 444040391 and 444040400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11100991 + ... + 11101030.

It is an arithmetic number, because the mean of its divisors is an integer number (77707077).

Almost surely, 2^444040420 is an apocalyptic number.

It is an amenable number.

444040420 is an abundant number, since it is smaller than the sum of its proper divisors (488444504).

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

444040420 is a wasteful number, since it uses less digits than its factorization.

444040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22202030 (or 22202028 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 444040420 is about 21072.2666080325. The cubic root of 444040420 is about 762.9115119937.

Adding to 444040420 its reverse (24040444), we get a palindrome (468080864).

The spelling of 444040420 in words is "four hundred forty-four million, forty thousand, four hundred twenty".