259693249 has 2 divisors, whose sum is σ = 259693250. Its totient is φ = 259693248.

The previous prime is 259693223. The next prime is 259693261. The reversal of 259693249 is 942396952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134096400 + 125596849 = 11580^2 + 11207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259693249 is a prime.

It is not a weakly prime, because it can be changed into another prime (259693219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129846624 + 129846625.

It is an arithmetic number, because the mean of its divisors is an integer number (129846625).

Almost surely, 2^259693249 is an apocalyptic number.

It is an amenable number.

259693249 is a deficient number, since it is larger than the sum of its proper divisors (1).

259693249 is an equidigital number, since it uses as much as digits as its factorization.

259693249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 49.

The square root of 259693249 is about 16115.0007446478. Note that the first 3 decimals coincide. The cubic root of 259693249 is about 637.9993260345. Note that the first 3 decimals are identical.

The spelling of 259693249 in words is "two hundred fifty-nine million, six hundred ninety-three thousand, two hundred forty-nine".