240561799 has 2 divisors, whose sum is σ = 240561800. Its totient is φ = 240561798.

The previous prime is 240561779. The next prime is 240561803. The reversal of 240561799 is 997165042.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240561799 - 2¹⁷ = 240430727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240561709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120280899 + 120280900.

It is an arithmetic number, because the mean of its divisors is an integer number (120280900).

Almost surely, 2^240561799 is an apocalyptic number.

240561799 is a deficient number, since it is larger than the sum of its proper divisors (1).

240561799 is an equidigital number, since it uses as much as digits as its factorization.

240561799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 240561799 is about 15510.0547710187. The cubic root of 240561799 is about 621.9310233578.

The spelling of 240561799 in words is "two hundred forty million, five hundred sixty-one thousand, seven hundred ninety-nine".