240217249 has 2 divisors, whose sum is σ = 240217250. Its totient is φ = 240217248.

The previous prime is 240217223. The next prime is 240217273. The reversal of 240217249 is 942712042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186459025 + 53758224 = 13655^2 + 7332^2 .

It is a cyclic number.

It is not a de Polignac number, because 240217249 - 2¹¹ = 240215201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240217249.

It is not a weakly prime, because it can be changed into another prime (240217279) 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, 120108624 + 120108625.

It is an arithmetic number, because the mean of its divisors is an integer number (120108625).

Almost surely, 2^240217249 is an apocalyptic number.

It is an amenable number.

240217249 is a deficient number, since it is larger than the sum of its proper divisors (1).

240217249 is an equidigital number, since it uses as much as digits as its factorization.

240217249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 240217249 is about 15498.9434801215. The cubic root of 240217249 is about 621.6339566277.

The spelling of 240217249 in words is "two hundred forty million, two hundred seventeen thousand, two hundred forty-nine".