240545993 has 2 divisors, whose sum is σ = 240545994. Its totient is φ = 240545992.

The previous prime is 240545989. The next prime is 240546011. The reversal of 240545993 is 399545042.

240545993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239228089 + 1317904 = 15467^2 + 1148^2 .

It is a cyclic number.

It is not a de Polignac number, because 240545993 - 2² = 240545989 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240545993.

It is not a weakly prime, because it can be changed into another prime (240545933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120272996 + 120272997.

It is an arithmetic number, because the mean of its divisors is an integer number (120272997).

Almost surely, 2^240545993 is an apocalyptic number.

It is an amenable number.

240545993 is a deficient number, since it is larger than the sum of its proper divisors (1).

240545993 is an equidigital number, since it uses as much as digits as its factorization.

240545993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 240545993 is about 15509.5452222172. The cubic root of 240545993 is about 621.9174018309.

The spelling of 240545993 in words is "two hundred forty million, five hundred forty-five thousand, nine hundred ninety-three".