240340897 has 4 divisors (see below), whose sum is σ = 240414340. Its totient is φ = 240267456.

The previous prime is 240340843. The next prime is 240340907. The reversal of 240340897 is 798043042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55815841 + 184525056 = 7471^2 + 13584^2 .

It is a cyclic number.

It is not a de Polignac number, because 240340897 - 2²³ = 231952289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240340817) 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, 31572 + ... + 38437.

It is an arithmetic number, because the mean of its divisors is an integer number (60103585).

Almost surely, 2^240340897 is an apocalyptic number.

It is an amenable number.

240340897 is a deficient number, since it is larger than the sum of its proper divisors (73443).

240340897 is an equidigital number, since it uses as much as digits as its factorization.

240340897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73442.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 240340897 is about 15502.9318840018. The cubic root of 240340897 is about 621.7405970562.

The spelling of 240340897 in words is "two hundred forty million, three hundred forty thousand, eight hundred ninety-seven".