241440209 has 2 divisors, whose sum is σ = 241440210. Its totient is φ = 241440208.

The previous prime is 241440193. The next prime is 241440211. The reversal of 241440209 is 902044142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195580225 + 45859984 = 13985^2 + 6772^2 .

It is a cyclic number.

It is not a de Polignac number, because 241440209 - 2⁴ = 241440193 is a prime.

Together with 241440211, 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 (241440229) 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, 120720104 + 120720105.

It is an arithmetic number, because the mean of its divisors is an integer number (120720105).

Almost surely, 2^241440209 is an apocalyptic number.

It is an amenable number.

241440209 is a deficient number, since it is larger than the sum of its proper divisors (1).

241440209 is an equidigital number, since it uses as much as digits as its factorization.

241440209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 241440209 is about 15538.3464049428. The cubic root of 241440209 is about 622.6870963342.

The spelling of 241440209 in words is "two hundred forty-one million, four hundred forty thousand, two hundred nine".