244426309 has 2 divisors, whose sum is σ = 244426310. Its totient is φ = 244426308.

The previous prime is 244426291. The next prime is 244426331. The reversal of 244426309 is 903624442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222308100 + 22118209 = 14910^2 + 4703^2 .

It is a cyclic number.

It is not a de Polignac number, because 244426309 - 2⁵ = 244426277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244424309) 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, 122213154 + 122213155.

It is an arithmetic number, because the mean of its divisors is an integer number (122213155).

Almost surely, 2^244426309 is an apocalyptic number.

It is an amenable number.

244426309 is a deficient number, since it is larger than the sum of its proper divisors (1).

244426309 is an equidigital number, since it uses as much as digits as its factorization.

244426309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 244426309 is about 15634.1392151919. The cubic root of 244426309 is about 625.2436886530.

The spelling of 244426309 in words is "two hundred forty-four million, four hundred twenty-six thousand, three hundred nine".