244440137 has 2 divisors, whose sum is σ = 244440138. Its totient is φ = 244440136.

The previous prime is 244440089. The next prime is 244440139. The reversal of 244440137 is 731044442.

244440137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226833721 + 17606416 = 15061^2 + 4196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244440137 is a prime.

Together with 244440139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (244440139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122220068 + 122220069.

It is an arithmetic number, because the mean of its divisors is an integer number (122220069).

Almost surely, 2^244440137 is an apocalyptic number.

It is an amenable number.

244440137 is a deficient number, since it is larger than the sum of its proper divisors (1).

244440137 is an equidigital number, since it uses as much as digits as its factorization.

244440137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 244440137 is about 15634.5814462684. The cubic root of 244440137 is about 625.2554791278.

Adding to 244440137 its reverse (731044442), we get a palindrome (975484579).

The spelling of 244440137 in words is "two hundred forty-four million, four hundred forty thousand, one hundred thirty-seven".