240685893 has 18 divisors (see below), whose sum is σ = 404418534. Its totient is φ = 137534544.

The previous prime is 240685889. The next prime is 240685927. The reversal of 240685893 is 398586042.

240685893 is a `hidden beast` number, since 2 + 4 + 0 + 68 + 589 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 226713249 + 13972644 = 15057^2 + 3738^2 .

It is not a de Polignac number, because 240685893 - 2² = 240685889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240685873) 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 17 ways as a sum of consecutive naturals, for example, 272446 + ... + 273327.

Almost surely, 2^240685893 is an apocalyptic number.

It is an amenable number.

240685893 is a deficient number, since it is larger than the sum of its proper divisors (163732641).

240685893 is a wasteful number, since it uses less digits than its factorization.

240685893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545793 (or 545783 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 240685893 is about 15514.0546924394. The cubic root of 240685893 is about 622.0379461829.

The spelling of 240685893 in words is "two hundred forty million, six hundred eighty-five thousand, eight hundred ninety-three".