259743397 has 2 divisors, whose sum is σ = 259743398. Its totient is φ = 259743396.

The previous prime is 259743377. The next prime is 259743413. The reversal of 259743397 is 793347952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161951076 + 97792321 = 12726^2 + 9889^2 .

It is a cyclic number.

It is not a de Polignac number, because 259743397 - 2¹⁵ = 259710629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259743397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259743317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129871698 + 129871699.

It is an arithmetic number, because the mean of its divisors is an integer number (129871699).

Almost surely, 2^259743397 is an apocalyptic number.

It is an amenable number.

259743397 is a deficient number, since it is larger than the sum of its proper divisors (1).

259743397 is an equidigital number, since it uses as much as digits as its factorization.

259743397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 49.

The square root of 259743397 is about 16116.5566111375. The cubic root of 259743397 is about 638.0403902915.

The spelling of 259743397 in words is "two hundred fifty-nine million, seven hundred forty-three thousand, three hundred ninety-seven".