244440121 has 4 divisors (see below), whose sum is σ = 244642852. Its totient is φ = 244237392.

The previous prime is 244440089. The next prime is 244440137. The reversal of 244440121 is 121044442.

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 119246400 + 125193721 = 10920^2 + 11189^2 .

It is a cyclic number.

It is not a de Polignac number, because 244440121 - 2⁵ = 244440089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 244440092 and 244440101.

It is not an unprimeable number, because it can be changed into a prime (244440151) 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, 99546 + ... + 101971.

It is an arithmetic number, because the mean of its divisors is an integer number (61160713).

Almost surely, 2^244440121 is an apocalyptic number.

It is an amenable number.

244440121 is a deficient number, since it is larger than the sum of its proper divisors (202731).

244440121 is a wasteful number, since it uses less digits than its factorization.

244440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202730.

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

The square root of 244440121 is about 15634.5809345822. The cubic root of 244440121 is about 625.2554654856.

Adding to 244440121 its reverse (121044442), we get a palindrome (365484563).

The spelling of 244440121 in words is "two hundred forty-four million, four hundred forty thousand, one hundred twenty-one".