4044255421 has 4 divisors (see below), whose sum is σ = 4044764700. Its totient is φ = 4043746144.

The previous prime is 4044255403. The next prime is 4044255451. The reversal of 4044255421 is 1245524404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1023104196 + 3021151225 = 31986^2 + 54965^2 .

It is a cyclic number.

It is not a de Polignac number, because 4044255421 - 2¹¹ = 4044253373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044255401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242536 + ... + 258673.

It is an arithmetic number, because the mean of its divisors is an integer number (1011191175).

Almost surely, 2^4044255421 is an apocalyptic number.

It is an amenable number.

4044255421 is a deficient number, since it is larger than the sum of its proper divisors (509279).

4044255421 is an equidigital number, since it uses as much as digits as its factorization.

4044255421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509278.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 4044255421 is about 63594.4606156857. The cubic root of 4044255421 is about 1593.2338519681.

Adding to 4044255421 its reverse (1245524404), we get a palindrome (5289779825).

The spelling of 4044255421 in words is "four billion, forty-four million, two hundred fifty-five thousand, four hundred twenty-one".