259596409 has 4 divisors (see below), whose sum is σ = 274866804. Its totient is φ = 244326016.

The previous prime is 259596383. The next prime is 259596413. The reversal of 259596409 is 904695952.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73874025 + 185722384 = 8595^2 + 13628^2 .

It is a cyclic number.

It is not a de Polignac number, because 259596409 - 2¹⁵ = 259563641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259596479) 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, 7635172 + ... + 7635205.

It is an arithmetic number, because the mean of its divisors is an integer number (68716701).

Almost surely, 2^259596409 is an apocalyptic number.

It is an amenable number.

259596409 is a deficient number, since it is larger than the sum of its proper divisors (15270395).

259596409 is a wasteful number, since it uses less digits than its factorization.

259596409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15270394.

The product of its (nonzero) digits is 874800, while the sum is 49.

The square root of 259596409 is about 16111.9958105754. The cubic root of 259596409 is about 637.9200125414.

The spelling of 259596409 in words is "two hundred fifty-nine million, five hundred ninety-six thousand, four hundred nine".