240747491 has 2 divisors, whose sum is σ = 240747492. Its totient is φ = 240747490.

The previous prime is 240747469. The next prime is 240747511. The reversal of 240747491 is 194747042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240747491 - 2¹⁴ = 240731107 is a prime.

It is not a weakly prime, because it can be changed into another prime (240747401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120373745 + 120373746.

It is an arithmetic number, because the mean of its divisors is an integer number (120373746).

Almost surely, 2^240747491 is an apocalyptic number.

240747491 is a deficient number, since it is larger than the sum of its proper divisors (1).

240747491 is an equidigital number, since it uses as much as digits as its factorization.

240747491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 240747491 is about 15516.0397975772. The cubic root of 240747491 is about 622.0910070758.

The spelling of 240747491 in words is "two hundred forty million, seven hundred forty-seven thousand, four hundred ninety-one".