259297849 has 2 divisors, whose sum is σ = 259297850. Its totient is φ = 259297848.

The previous prime is 259297847. The next prime is 259297853. The reversal of 259297849 is 948792952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167961600 + 91336249 = 12960^2 + 9557^2 .

It is a cyclic number.

It is not a de Polignac number, because 259297849 - 2¹ = 259297847 is a prime.

Together with 259297847, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 259297849.

It is not a weakly prime, because it can be changed into another prime (259297847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129648924 + 129648925.

It is an arithmetic number, because the mean of its divisors is an integer number (129648925).

Almost surely, 2^259297849 is an apocalyptic number.

It is an amenable number.

259297849 is a deficient number, since it is larger than the sum of its proper divisors (1).

259297849 is an equidigital number, since it uses as much as digits as its factorization.

259297849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 55.

The square root of 259297849 is about 16102.7279986964. The cubic root of 259297849 is about 637.6753629577.

The spelling of 259297849 in words is "two hundred fifty-nine million, two hundred ninety-seven thousand, eight hundred forty-nine".