444121552 has 20 divisors (see below), whose sum is σ = 983412256. Its totient is φ = 190337760.

The previous prime is 444121499. The next prime is 444121577. The reversal of 444121552 is 255121444.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 444121552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982574 + ... + 1982797.

Almost surely, 2^444121552 is an apocalyptic number.

It is an amenable number.

444121552 is an abundant number, since it is smaller than the sum of its proper divisors (539290704).

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

444121552 is a wasteful number, since it uses less digits than its factorization.

444121552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965386 (or 3965380 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

The square root of 444121552 is about 21074.1916096442. The cubic root of 444121552 is about 762.9579738056.

Adding to 444121552 its reverse (255121444), we get a palindrome (699242996).

The spelling of 444121552 in words is "four hundred forty-four million, one hundred twenty-one thousand, five hundred fifty-two".