259135469 has 2 divisors, whose sum is σ = 259135470. Its totient is φ = 259135468.

The previous prime is 259135441. The next prime is 259135477. The reversal of 259135469 is 964531952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251222500 + 7912969 = 15850^2 + 2813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259135469 is a prime.

It is a super-2 number, since 2×259135469² = 134302382587699922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259135969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129567734 + 129567735.

It is an arithmetic number, because the mean of its divisors is an integer number (129567735).

Almost surely, 2^259135469 is an apocalyptic number.

It is an amenable number.

259135469 is a deficient number, since it is larger than the sum of its proper divisors (1).

259135469 is an equidigital number, since it uses as much as digits as its factorization.

259135469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 44.

The square root of 259135469 is about 16097.6852062649. The cubic root of 259135469 is about 637.5422247567.

The spelling of 259135469 in words is "two hundred fifty-nine million, one hundred thirty-five thousand, four hundred sixty-nine".