4404331121 has 4 divisors (see below), whose sum is σ = 4404951972. Its totient is φ = 4403710272.

The previous prime is 4404331091. The next prime is 4404331147. The reversal of 4404331121 is 1211334044.

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 4017658225 + 386672896 = 63385^2 + 19664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4404331121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4404331721) 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, 299660 + ... + 314013.

It is an arithmetic number, because the mean of its divisors is an integer number (1101237993).

Almost surely, 2^4404331121 is an apocalyptic number.

It is an amenable number.

4404331121 is a deficient number, since it is larger than the sum of its proper divisors (620851).

4404331121 is an equidigital number, since it uses as much as digits as its factorization.

4404331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620850.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 4404331121 is about 66365.1348299693. The cubic root of 4404331121 is about 1639.1800284519.

Adding to 4404331121 its reverse (1211334044), we get a palindrome (5615665165).

The spelling of 4404331121 in words is "four billion, four hundred four million, three hundred thirty-one thousand, one hundred twenty-one".