259113409 has 3 divisors (see below), whose sum is σ = 259129507. Its totient is φ = 259097312.

The previous prime is 259113389. The next prime is 259113457. The reversal of 259113409 is 904311952.

The square root of 259113409 is 16097.

It is a perfect power (a square), and thus also a powerful number.

259113409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 149450625 + 109662784 = 12225^2 + 10472^2 .

It is a de Polignac number, because none of the positive numbers 2^k-259113409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259113499) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8049 + ... + 24145.

Almost surely, 2^259113409 is an apocalyptic number.

259113409 is the 16097-th square number.

259113409 is the 8049-th centered octagonal number.

It is an amenable number.

259113409 is a deficient number, since it is larger than the sum of its proper divisors (16098).

259113409 is an frugal number, since it uses more digits than its factorization.

259113409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32194 (or 16097 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The cubic root of 259113409 is about 637.5241330862.

The spelling of 259113409 in words is "two hundred fifty-nine million, one hundred thirteen thousand, four hundred nine".