4440403121 has 16 divisors (see below), whose sum is σ = 5726989440. Its totient is φ = 3340740480.

The previous prime is 4440403109. The next prime is 4440403153. The reversal of 4440403121 is 1213040444.

It is a happy number.

It is not a de Polignac number, because 4440403121 - 2²⁶ = 4373294257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4440403921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 992036 + ... + 996501.

It is an arithmetic number, because the mean of its divisors is an integer number (357936840).

Almost surely, 2^4440403121 is an apocalyptic number.

It is an amenable number.

4440403121 is a deficient number, since it is larger than the sum of its proper divisors (1286586319).

4440403121 is a wasteful number, since it uses less digits than its factorization.

4440403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988584.

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

The square root of 4440403121 is about 66636.3498475119. The cubic root of 4440403121 is about 1643.6428937310.

Adding to 4440403121 its reverse (1213040444), we get a palindrome (5653443565).

The spelling of 4440403121 in words is "four billion, four hundred forty million, four hundred three thousand, one hundred twenty-one".