240749791 has 2 divisors, whose sum is σ = 240749792. Its totient is φ = 240749790.

The previous prime is 240749783. The next prime is 240749837. The reversal of 240749791 is 197947042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240749791 - 2³ = 240749783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240749701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120374895 + 120374896.

It is an arithmetic number, because the mean of its divisors is an integer number (120374896).

Almost surely, 2^240749791 is an apocalyptic number.

240749791 is a deficient number, since it is larger than the sum of its proper divisors (1).

240749791 is an equidigital number, since it uses as much as digits as its factorization.

240749791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 240749791 is about 15516.1139142506. The cubic root of 240749791 is about 622.0929881345.

The spelling of 240749791 in words is "two hundred forty million, seven hundred forty-nine thousand, seven hundred ninety-one".