243244957 has 2 divisors, whose sum is σ = 243244958. Its totient is φ = 243244956.

The previous prime is 243244933. The next prime is 243244997. The reversal of 243244957 is 759442342.

It is an a-pointer prime, because the next prime (243244997) can be obtained adding 243244957 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197290116 + 45954841 = 14046^2 + 6779^2 .

It is a cyclic number.

It is not a de Polignac number, because 243244957 - 2⁷ = 243244829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243244927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121622478 + 121622479.

It is an arithmetic number, because the mean of its divisors is an integer number (121622479).

Almost surely, 2^243244957 is an apocalyptic number.

It is an amenable number.

243244957 is a deficient number, since it is larger than the sum of its proper divisors (1).

243244957 is an equidigital number, since it uses as much as digits as its factorization.

243244957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 40.

The square root of 243244957 is about 15596.3122884867. The cubic root of 243244957 is about 624.2347600750.

The spelling of 243244957 in words is "two hundred forty-three million, two hundred forty-four thousand, nine hundred fifty-seven".