240840779 has 2 divisors, whose sum is σ = 240840780. Its totient is φ = 240840778.

The previous prime is 240840731. The next prime is 240840791. The reversal of 240840779 is 977048042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240840779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240840709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120420389 + 120420390.

It is an arithmetic number, because the mean of its divisors is an integer number (120420390).

Almost surely, 2^240840779 is an apocalyptic number.

240840779 is a deficient number, since it is larger than the sum of its proper divisors (1).

240840779 is an equidigital number, since it uses as much as digits as its factorization.

240840779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 240840779 is about 15519.0456858661. The cubic root of 240840779 is about 622.1713486975.

The spelling of 240840779 in words is "two hundred forty million, eight hundred forty thousand, seven hundred seventy-nine".