259867493 has 2 divisors, whose sum is σ = 259867494. Its totient is φ = 259867492.

The previous prime is 259867483. The next prime is 259867511. The reversal of 259867493 is 394768952.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244828609 + 15038884 = 15647^2 + 3878^2 .

It is a cyclic number.

It is not a de Polignac number, because 259867493 - 2¹⁰ = 259866469 is a prime.

It is a super-2 number, since 2×259867493² = 135062227836210098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259867403) 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, 129933746 + 129933747.

It is an arithmetic number, because the mean of its divisors is an integer number (129933747).

Almost surely, 2^259867493 is an apocalyptic number.

It is an amenable number.

259867493 is a deficient number, since it is larger than the sum of its proper divisors (1).

259867493 is an equidigital number, since it uses as much as digits as its factorization.

259867493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 53.

The square root of 259867493 is about 16120.4061053064. The cubic root of 259867493 is about 638.1419849872.

The spelling of 259867493 in words is "two hundred fifty-nine million, eight hundred sixty-seven thousand, four hundred ninety-three".