259859423 has 4 divisors (see below), whose sum is σ = 264263880. Its totient is φ = 255454968.

The previous prime is 259859419. The next prime is 259859429. The reversal of 259859423 is 324958952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 259859423 - 2² = 259859419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259859429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202140 + ... + 2202257.

It is an arithmetic number, because the mean of its divisors is an integer number (66065970).

Almost surely, 2^259859423 is an apocalyptic number.

259859423 is a deficient number, since it is larger than the sum of its proper divisors (4404457).

259859423 is an equidigital number, since it uses as much as digits as its factorization.

259859423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404456.

The product of its digits is 777600, while the sum is 47.

The square root of 259859423 is about 16120.1557994952. The cubic root of 259859423 is about 638.1353792371.

The spelling of 259859423 in words is "two hundred fifty-nine million, eight hundred fifty-nine thousand, four hundred twenty-three".