243414289 has 2 divisors, whose sum is σ = 243414290. Its totient is φ = 243414288.

The previous prime is 243414277. The next prime is 243414293. The reversal of 243414289 is 982414342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243360000 + 54289 = 15600^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 243414289 - 2⁹ = 243413777 is a prime.

It is not a weakly prime, because it can be changed into another prime (243414889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121707144 + 121707145.

It is an arithmetic number, because the mean of its divisors is an integer number (121707145).

Almost surely, 2^243414289 is an apocalyptic number.

It is an amenable number.

243414289 is a deficient number, since it is larger than the sum of its proper divisors (1).

243414289 is an equidigital number, since it uses as much as digits as its factorization.

243414289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 37.

The square root of 243414289 is about 15601.7399350201. The cubic root of 243414289 is about 624.3795776055.

The spelling of 243414289 in words is "two hundred forty-three million, four hundred fourteen thousand, two hundred eighty-nine".