4044041321 has 4 divisors (see below), whose sum is σ = 4047376452. Its totient is φ = 4040706192.

The previous prime is 4044041317. The next prime is 4044041347. The reversal of 4044041321 is 1231404404.

It is a happy number.

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 281568400 + 3762472921 = 16780^2 + 61339^2 .

It is a cyclic number.

It is not a de Polignac number, because 4044041321 - 2² = 4044041317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4044041021) 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, 1665746 + ... + 1668171.

It is an arithmetic number, because the mean of its divisors is an integer number (1011844113).

Almost surely, 2^4044041321 is an apocalyptic number.

It is an amenable number.

4044041321 is a deficient number, since it is larger than the sum of its proper divisors (3335131).

4044041321 is a wasteful number, since it uses less digits than its factorization.

4044041321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335130.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4044041321 is about 63592.7772706932. Note that the first 3 decimals coincide. The cubic root of 4044041321 is about 1593.2057365837.

Adding to 4044041321 its reverse (1231404404), we get a palindrome (5275445725).

The spelling of 4044041321 in words is "four billion, forty-four million, forty-one thousand, three hundred twenty-one".