259786243 has 2 divisors, whose sum is σ = 259786244. Its totient is φ = 259786242.

The previous prime is 259786237. The next prime is 259786309. The reversal of 259786243 is 342687952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259786243 - 2⁹ = 259785731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 259786193 and 259786202.

It is not a weakly prime, because it can be changed into another prime (259186243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129893121 + 129893122.

It is an arithmetic number, because the mean of its divisors is an integer number (129893122).

Almost surely, 2^259786243 is an apocalyptic number.

259786243 is a deficient number, since it is larger than the sum of its proper divisors (1).

259786243 is an equidigital number, since it uses as much as digits as its factorization.

259786243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The square root of 259786243 is about 16117.8858104902. The cubic root of 259786243 is about 638.0754710364.

The spelling of 259786243 in words is "two hundred fifty-nine million, seven hundred eighty-six thousand, two hundred forty-three".