244439861 has 2 divisors, whose sum is σ = 244439862. Its totient is φ = 244439860.

The previous prime is 244439851. The next prime is 244439873. The reversal of 244439861 is 168934442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148693636 + 95746225 = 12194^2 + 9785^2 .

It is a cyclic number.

It is not a de Polignac number, because 244439861 - 2¹⁰ = 244438837 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 (244439801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122219930 + 122219931.

It is an arithmetic number, because the mean of its divisors is an integer number (122219931).

Almost surely, 2^244439861 is an apocalyptic number.

It is an amenable number.

244439861 is a deficient number, since it is larger than the sum of its proper divisors (1).

244439861 is an equidigital number, since it uses as much as digits as its factorization.

244439861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 244439861 is about 15634.5726196785. The cubic root of 244439861 is about 625.2552438001.

The spelling of 244439861 in words is "two hundred forty-four million, four hundred thirty-nine thousand, eight hundred sixty-one".