259442669 has 2 divisors, whose sum is σ = 259442670. Its totient is φ = 259442668.

The previous prime is 259442653. The next prime is 259442707. The reversal of 259442669 is 966244952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223861444 + 35581225 = 14962^2 + 5965^2 .

It is a cyclic number.

It is not a de Polignac number, because 259442669 - 2⁴ = 259442653 is a prime.

It is a super-2 number, since 2×259442669² = 134620996995687122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259442609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129721334 + 129721335.

It is an arithmetic number, because the mean of its divisors is an integer number (129721335).

Almost surely, 2^259442669 is an apocalyptic number.

It is an amenable number.

259442669 is a deficient number, since it is larger than the sum of its proper divisors (1).

259442669 is an equidigital number, since it uses as much as digits as its factorization.

259442669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 47.

The square root of 259442669 is about 16107.2241245970. The cubic root of 259442669 is about 637.7940565236.

The spelling of 259442669 in words is "two hundred fifty-nine million, four hundred forty-two thousand, six hundred sixty-nine".