259797871 has 2 divisors, whose sum is σ = 259797872. Its totient is φ = 259797870.

The previous prime is 259797869. The next prime is 259797877. The reversal of 259797871 is 178797952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259797871 - 2¹ = 259797869 is a prime.

It is a super-2 number, since 2×259797871² = 134989867552265282, which contains 22 as substring.

Together with 259797869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259797877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129898935 + 129898936.

It is an arithmetic number, because the mean of its divisors is an integer number (129898936).

Almost surely, 2^259797871 is an apocalyptic number.

259797871 is a deficient number, since it is larger than the sum of its proper divisors (1).

259797871 is an equidigital number, since it uses as much as digits as its factorization.

259797871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 55.

The square root of 259797871 is about 16118.2465237382. The cubic root of 259797871 is about 638.0849909540.

The spelling of 259797871 in words is "two hundred fifty-nine million, seven hundred ninety-seven thousand, eight hundred seventy-one".