4440432121 has 8 divisors (see below), whose sum is σ = 4598080200. Its totient is φ = 4283086080.

The previous prime is 4440432119. The next prime is 4440432127. The reversal of 4440432121 is 1212340444.

It can be written as a sum of positive squares in 4 ways, for example, as 46730896 + 4393701225 = 6836^2 + 66285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4440432121 - 2¹ = 4440432119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4440432127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45376 + ... + 104593.

It is an arithmetic number, because the mean of its divisors is an integer number (574760025).

Almost surely, 2^4440432121 is an apocalyptic number.

It is an amenable number.

4440432121 is a deficient number, since it is larger than the sum of its proper divisors (157648079).

4440432121 is a wasteful number, since it uses less digits than its factorization.

4440432121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151019.

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

The square root of 4440432121 is about 66636.5674461102. The cubic root of 4440432121 is about 1643.6464719001.

Adding to 4440432121 its reverse (1212340444), we get a palindrome (5652772565).

The spelling of 4440432121 in words is "four billion, four hundred forty million, four hundred thirty-two thousand, one hundred twenty-one".