244424321 has 4 divisors (see below), whose sum is σ = 245790000. Its totient is φ = 243058644.

The previous prime is 244424309. The next prime is 244424333. The reversal of 244424321 is 123424442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (244424309) and next prime (244424333).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244424321 is a prime.

It is a super-2 number, since 2×244424321² = 119486497392622082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244420321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682571 + ... + 682928.

It is an arithmetic number, because the mean of its divisors is an integer number (61447500).

Almost surely, 2^244424321 is an apocalyptic number.

It is an amenable number.

244424321 is a deficient number, since it is larger than the sum of its proper divisors (1365679).

244424321 is a wasteful number, since it uses less digits than its factorization.

244424321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365678.

The product of its digits is 6144, while the sum is 26.

The square root of 244424321 is about 15634.0756362505. The cubic root of 244424321 is about 625.2419935438.

Adding to 244424321 its reverse (123424442), we get a palindrome (367848763).

The spelling of 244424321 in words is "two hundred forty-four million, four hundred twenty-four thousand, three hundred twenty-one".