259889129 has 2 divisors, whose sum is σ = 259889130. Its totient is φ = 259889128.

The previous prime is 259889111. The next prime is 259889143. The reversal of 259889129 is 921988952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255136729 + 4752400 = 15973^2 + 2180^2 .

It is a cyclic number.

It is not a de Polignac number, because 259889129 - 2¹⁶ = 259823593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229889129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129944564 + 129944565.

It is an arithmetic number, because the mean of its divisors is an integer number (129944565).

Almost surely, 2^259889129 is an apocalyptic number.

It is an amenable number.

259889129 is a deficient number, since it is larger than the sum of its proper divisors (1).

259889129 is an equidigital number, since it uses as much as digits as its factorization.

259889129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 53.

The square root of 259889129 is about 16121.0771662442. The cubic root of 259889129 is about 638.1596945985.

The spelling of 259889129 in words is "two hundred fifty-nine million, eight hundred eighty-nine thousand, one hundred twenty-nine".