259431689 has 8 divisors (see below), whose sum is σ = 286427232. Its totient is φ = 233004640.

The previous prime is 259431677. The next prime is 259431703. The reversal of 259431689 is 986134952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 259431689 - 2²⁰ = 258383113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259431619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141164 + ... + 142989.

It is an arithmetic number, because the mean of its divisors is an integer number (35803404).

Almost surely, 2^259431689 is an apocalyptic number.

It is an amenable number.

259431689 is a deficient number, since it is larger than the sum of its proper divisors (26995543).

259431689 is a wasteful number, since it uses less digits than its factorization.

259431689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284247.

The product of its digits is 466560, while the sum is 47.

The square root of 259431689 is about 16106.8832801383. The cubic root of 259431689 is about 637.7850589320.

The spelling of 259431689 in words is "two hundred fifty-nine million, four hundred thirty-one thousand, six hundred eighty-nine".