259384109 has 2 divisors, whose sum is σ = 259384110. Its totient is φ = 259384108.

The previous prime is 259384093. The next prime is 259384123. The reversal of 259384109 is 901483952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254881225 + 4502884 = 15965^2 + 2122^2 .

It is a cyclic number.

It is not a de Polignac number, because 259384109 - 2⁴ = 259384093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259384309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129692054 + 129692055.

It is an arithmetic number, because the mean of its divisors is an integer number (129692055).

Almost surely, 2^259384109 is an apocalyptic number.

It is an amenable number.

259384109 is a deficient number, since it is larger than the sum of its proper divisors (1).

259384109 is an equidigital number, since it uses as much as digits as its factorization.

259384109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 259384109 is about 16105.4062041291. The cubic root of 259384109 is about 637.7460664345.

The spelling of 259384109 in words is "two hundred fifty-nine million, three hundred eighty-four thousand, one hundred nine".