244617421 has 2 divisors, whose sum is σ = 244617422. Its totient is φ = 244617420.

The previous prime is 244617391. The next prime is 244617427. The reversal of 244617421 is 124716442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212751396 + 31866025 = 14586^2 + 5645^2 .

It is a cyclic number.

It is not a de Polignac number, because 244617421 - 2¹⁷ = 244486349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244617427) 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, 122308710 + 122308711.

It is an arithmetic number, because the mean of its divisors is an integer number (122308711).

Almost surely, 2^244617421 is an apocalyptic number.

It is an amenable number.

244617421 is a deficient number, since it is larger than the sum of its proper divisors (1).

244617421 is an equidigital number, since it uses as much as digits as its factorization.

244617421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 31.

The square root of 244617421 is about 15640.2500299707. The cubic root of 244617421 is about 625.4066013432.

The spelling of 244617421 in words is "two hundred forty-four million, six hundred seventeen thousand, four hundred twenty-one".