4420444121 has 4 divisors (see below), whose sum is σ = 4433110500. Its totient is φ = 4407777744.

The previous prime is 4420444111. The next prime is 4420444123. The reversal of 4420444121 is 1214440244.

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 1733473225 + 2686970896 = 41635^2 + 51836^2 .

It is a cyclic number.

It is not a de Polignac number, because 4420444121 - 2¹⁸ = 4420181977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4420444123) 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, 6332666 + ... + 6333363.

It is an arithmetic number, because the mean of its divisors is an integer number (1108277625).

Almost surely, 2^4420444121 is an apocalyptic number.

It is an amenable number.

4420444121 is a deficient number, since it is larger than the sum of its proper divisors (12666379).

4420444121 is a wasteful number, since it uses less digits than its factorization.

4420444121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12666378.

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 4420444121 is about 66486.4205759342. The cubic root of 4420444121 is about 1641.1765453125.

Adding to 4420444121 its reverse (1214440244), we get a palindrome (5634884365).

The spelling of 4420444121 in words is "four billion, four hundred twenty million, four hundred forty-four thousand, one hundred twenty-one".