4403442121 has 4 divisors (see below), whose sum is σ = 4742168452. Its totient is φ = 4064715792.

The previous prime is 4403442097. The next prime is 4403442149. The reversal of 4403442121 is 1212443044.

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 2506404096 + 1897038025 = 50064^2 + 43555^2 .

It is a cyclic number.

It is not a de Polignac number, because 4403442121 - 2²³ = 4395053513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4403242121) 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, 169363146 + ... + 169363171.

It is an arithmetic number, because the mean of its divisors is an integer number (1185542113).

Almost surely, 2^4403442121 is an apocalyptic number.

It is an amenable number.

4403442121 is a deficient number, since it is larger than the sum of its proper divisors (338726331).

4403442121 is a wasteful number, since it uses less digits than its factorization.

4403442121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338726330.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 4403442121 is about 66358.4366979814. The cubic root of 4403442121 is about 1639.0697333006.

Adding to 4403442121 its reverse (1212443044), we get a palindrome (5615885165).

The spelling of 4403442121 in words is "four billion, four hundred three million, four hundred forty-two thousand, one hundred twenty-one".