243461089 has 2 divisors, whose sum is σ = 243461090. Its totient is φ = 243461088.

The previous prime is 243461087. The next prime is 243461107. The reversal of 243461089 is 980164342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159188689 + 84272400 = 12617^2 + 9180^2 .

It is a cyclic number.

It is not a de Polignac number, because 243461089 - 2¹ = 243461087 is a prime.

Together with 243461087, 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 (243461087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121730544 + 121730545.

It is an arithmetic number, because the mean of its divisors is an integer number (121730545).

Almost surely, 2^243461089 is an apocalyptic number.

It is an amenable number.

243461089 is a deficient number, since it is larger than the sum of its proper divisors (1).

243461089 is an equidigital number, since it uses as much as digits as its factorization.

243461089 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 37.

The square root of 243461089 is about 15603.2396956530. The cubic root of 243461089 is about 624.4195904464.

The spelling of 243461089 in words is "two hundred forty-three million, four hundred sixty-one thousand, eighty-nine".