244343332421 has 4 divisors (see below), whose sum is σ = 244344321132. Its totient is φ = 244342343712.

The previous prime is 244343332351. The next prime is 244343332459. The reversal of 244343332421 is 124233343442.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 102809368321 + 141533964100 = 320639^2 + 376210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244343332421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244343332481) 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, 237281 + ... + 738233.

It is an arithmetic number, because the mean of its divisors is an integer number (61086080283).

Almost surely, 2^244343332421 is an apocalyptic number.

It is an amenable number.

244343332421 is a deficient number, since it is larger than the sum of its proper divisors (988711).

244343332421 is an equidigital number, since it uses as much as digits as its factorization.

244343332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988710.

The product of its digits is 165888, while the sum is 35.

Adding to 244343332421 its reverse (124233343442), we get a palindrome (368576675863).

The spelling of 244343332421 in words is "two hundred forty-four billion, three hundred forty-three million, three hundred thirty-two thousand, four hundred twenty-one".