240845397 has 16 divisors (see below), whose sum is σ = 360866688. Its totient is φ = 141768000.

The previous prime is 240845347. The next prime is 240845399. The reversal of 240845397 is 793548042.

It is not a de Polignac number, because 240845397 - 2¹⁴ = 240829013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240845399) 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 in 15 ways as a sum of consecutive naturals, for example, 133354 + ... + 135147.

It is an arithmetic number, because the mean of its divisors is an integer number (22554168).

Almost surely, 2^240845397 is an apocalyptic number.

It is an amenable number.

240845397 is a deficient number, since it is larger than the sum of its proper divisors (120021291).

240845397 is a wasteful number, since it uses less digits than its factorization.

240845397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268540.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 240845397 is about 15519.1944700748. The cubic root of 240845397 is about 622.1753252790.

The spelling of 240845397 in words is "two hundred forty million, eight hundred forty-five thousand, three hundred ninety-seven".