4420440121 has 8 divisors (see below), whose sum is σ = 4459243464. Its totient is φ = 4381789440.

The previous prime is 4420440109. The next prime is 4420440137. The reversal of 4420440121 is 1210440244.

It can be written as a sum of positive squares in 4 ways, for example, as 2516426896 + 1904013225 = 50164^2 + 43635^2 .

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 4420440121 - 2⁷ = 4420439993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4420440092 and 4420440101.

It is not an unprimeable number, because it can be changed into a prime (4420440161) 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, 20391 + ... + 96211.

It is an arithmetic number, because the mean of its divisors is an integer number (557405433).

Almost surely, 2^4420440121 is an apocalyptic number.

It is an amenable number.

4420440121 is a deficient number, since it is larger than the sum of its proper divisors (38803343).

4420440121 is a wasteful number, since it uses less digits than its factorization.

4420440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76331.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 4420440121 is about 66486.3904945967. The cubic root of 4420440121 is about 1641.1760502862.

Adding to 4420440121 its reverse (1210440244), we get a palindrome (5630880365).

The spelling of 4420440121 in words is "four billion, four hundred twenty million, four hundred forty thousand, one hundred twenty-one".