4404340121 has 4 divisors (see below), whose sum is σ = 4487440932. Its totient is φ = 4321239312.

The previous prime is 4404340091. The next prime is 4404340123. The reversal of 4404340121 is 1210434044.

It is a happy number.

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 3165300121 + 1239040000 = 56261^2 + 35200^2 .

It is a cyclic number.

It is not a de Polignac number, because 4404340121 - 2²² = 4400145817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4404340123) 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, 41550326 + ... + 41550431.

It is an arithmetic number, because the mean of its divisors is an integer number (1121860233).

Almost surely, 2^4404340121 is an apocalyptic number.

It is an amenable number.

4404340121 is a deficient number, since it is larger than the sum of its proper divisors (83100811).

4404340121 is an equidigital number, since it uses as much as digits as its factorization.

4404340121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83100810.

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

The square root of 4404340121 is about 66365.2026366228. The cubic root of 4404340121 is about 1639.1811449749.

Adding to 4404340121 its reverse (1210434044), we get a palindrome (5614774165).

The spelling of 4404340121 in words is "four billion, four hundred four million, three hundred forty thousand, one hundred twenty-one".