244204421 has 2 divisors, whose sum is σ = 244204422. Its totient is φ = 244204420.

The previous prime is 244204417. The next prime is 244204423. The reversal of 244204421 is 124402442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163456225 + 80748196 = 12785^2 + 8986^2 .

It is a cyclic number.

It is not a de Polignac number, because 244204421 - 2² = 244204417 is a prime.

Together with 244204423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244204423) 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 as a sum of consecutive naturals, namely, 122102210 + 122102211.

It is an arithmetic number, because the mean of its divisors is an integer number (122102211).

Almost surely, 2^244204421 is an apocalyptic number.

It is an amenable number.

244204421 is a deficient number, since it is larger than the sum of its proper divisors (1).

244204421 is an equidigital number, since it uses as much as digits as its factorization.

244204421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 244204421 is about 15627.0413386540. The cubic root of 244204421 is about 625.0544345122.

Adding to 244204421 its reverse (124402442), we get a palindrome (368606863).

The spelling of 244204421 in words is "two hundred forty-four million, two hundred four thousand, four hundred twenty-one".