244885139 has 2 divisors, whose sum is σ = 244885140. Its totient is φ = 244885138.

The previous prime is 244885093. The next prime is 244885141. The reversal of 244885139 is 931588442.

It is a happy number.

244885139 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 is a cyclic number.

It is not a de Polignac number, because 244885139 - 2⁸ = 244884883 is a prime.

It is a Sophie Germain prime.

Together with 244885141, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244885139.

It is not a weakly prime, because it can be changed into another prime (244885159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122442569 + 122442570.

It is an arithmetic number, because the mean of its divisors is an integer number (122442570).

Almost surely, 2^244885139 is an apocalyptic number.

244885139 is a deficient number, since it is larger than the sum of its proper divisors (1).

244885139 is an equidigital number, since it uses as much as digits as its factorization.

244885139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 44.

The square root of 244885139 is about 15648.8063123038. The cubic root of 244885139 is about 625.6346738976.

The spelling of 244885139 in words is "two hundred forty-four million, eight hundred eighty-five thousand, one hundred thirty-nine".