259987799 has 2 divisors, whose sum is σ = 259987800. Its totient is φ = 259987798.

The previous prime is 259987787. The next prime is 259987823. The reversal of 259987799 is 997789952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259987799 - 2⁸ = 259987543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259987769) 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, 129993899 + 129993900.

It is an arithmetic number, because the mean of its divisors is an integer number (129993900).

Almost surely, 2^259987799 is an apocalyptic number.

259987799 is a deficient number, since it is larger than the sum of its proper divisors (1).

259987799 is an equidigital number, since it uses as much as digits as its factorization.

259987799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25719120, while the sum is 65.

The square root of 259987799 is about 16124.1371552093. The cubic root of 259987799 is about 638.2404460202.

The spelling of 259987799 in words is "two hundred fifty-nine million, nine hundred eighty-seven thousand, seven hundred ninety-nine".