259243689 has 16 divisors (see below), whose sum is σ = 354200000. Its totient is φ = 168569856.

The previous prime is 259243667. The next prime is 259243709. The reversal of 259243689 is 986342952.

It is a happy number.

It is not a de Polignac number, because 259243689 - 2¹⁷ = 259112617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (259247689) 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 in 15 ways as a sum of consecutive naturals, for example, 160317 + ... + 161925.

It is an arithmetic number, because the mean of its divisors is an integer number (22137500).

Almost surely, 2^259243689 is an apocalyptic number.

It is an amenable number.

259243689 is a deficient number, since it is larger than the sum of its proper divisors (94956311).

259243689 is a wasteful number, since it uses less digits than its factorization.

259243689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904.

The product of its digits is 933120, while the sum is 48.

The square root of 259243689 is about 16101.0462082437. The cubic root of 259243689 is about 637.6309624062.

The spelling of 259243689 in words is "two hundred fifty-nine million, two hundred forty-three thousand, six hundred eighty-nine".