240795217 has 4 divisors (see below), whose sum is σ = 259317940. Its totient is φ = 222272496.

The previous prime is 240795199. The next prime is 240795221. The reversal of 240795217 is 712597042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712597042 = 2 ⋅356298521.

It can be written as a sum of positive squares in 2 ways, for example, as 28772496 + 212022721 = 5364^2 + 14561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240795217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240795917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9261342 + ... + 9261367.

It is an arithmetic number, because the mean of its divisors is an integer number (64829485).

Almost surely, 2^240795217 is an apocalyptic number.

It is an amenable number.

240795217 is a deficient number, since it is larger than the sum of its proper divisors (18522723).

240795217 is a wasteful number, since it uses less digits than its factorization.

240795217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18522722.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 240795217 is about 15517.5776782332. The cubic root of 240795217 is about 622.1321123206.

The spelling of 240795217 in words is "two hundred forty million, seven hundred ninety-five thousand, two hundred seventeen".