259888091 has 2 divisors, whose sum is σ = 259888092. Its totient is φ = 259888090.

The previous prime is 259888073. The next prime is 259888141. The reversal of 259888091 is 190888952.

It is an a-pointer prime, because the next prime (259888141) can be obtained adding 259888091 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259888091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (259888021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129944045 + 129944046.

It is an arithmetic number, because the mean of its divisors is an integer number (129944046).

Almost surely, 2^259888091 is an apocalyptic number.

259888091 is a deficient number, since it is larger than the sum of its proper divisors (1).

259888091 is an equidigital number, since it uses as much as digits as its factorization.

259888091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 50.

The square root of 259888091 is about 16121.0449723335. The cubic root of 259888091 is about 638.1588449917.

The spelling of 259888091 in words is "two hundred fifty-nine million, eight hundred eighty-eight thousand, ninety-one".