241440509 has 2 divisors, whose sum is σ = 241440510. Its totient is φ = 241440508.

The previous prime is 241440481. The next prime is 241440517. The reversal of 241440509 is 905044142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187005625 + 54434884 = 13675^2 + 7378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241440509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241440209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120720254 + 120720255.

It is an arithmetic number, because the mean of its divisors is an integer number (120720255).

Almost surely, 2^241440509 is an apocalyptic number.

It is an amenable number.

241440509 is a deficient number, since it is larger than the sum of its proper divisors (1).

241440509 is an equidigital number, since it uses as much as digits as its factorization.

241440509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 241440509 is about 15538.3560584767. The cubic root of 241440509 is about 622.6873542394.

The spelling of 241440509 in words is "two hundred forty-one million, four hundred forty thousand, five hundred nine".