2444244421 has 2 divisors, whose sum is σ = 2444244422. Its totient is φ = 2444244420.

The previous prime is 2444244373. The next prime is 2444244443. The reversal of 2444244421 is 1244424442.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1514299396 + 929945025 = 38914^2 + 30495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2444244421 - 2¹⁹ = 2443720133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2444274421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222122210 + 1222122211.

It is an arithmetic number, because the mean of its divisors is an integer number (1222122211).

Almost surely, 2^2444244421 is an apocalyptic number.

It is an amenable number.

2444244421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2444244421 is an equidigital number, since it uses as much as digits as its factorization.

2444244421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32768, while the sum is 31.

The square root of 2444244421 is about 49439.3003692407. The cubic root of 2444244421 is about 1347.0432630196.

Adding to 2444244421 its reverse (1244424442), we get a palindrome (3688668863).

The spelling of 2444244421 in words is "two billion, four hundred forty-four million, two hundred forty-four thousand, four hundred twenty-one".