259319887 has 4 divisors (see below), whose sum is σ = 274574016. Its totient is φ = 244065760.

The previous prime is 259319881. The next prime is 259319891. The reversal of 259319887 is 788913952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259319887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259319881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7627039 + ... + 7627072.

It is an arithmetic number, because the mean of its divisors is an integer number (68643504).

Almost surely, 2^259319887 is an apocalyptic number.

259319887 is a deficient number, since it is larger than the sum of its proper divisors (15254129).

259319887 is a wasteful number, since it uses less digits than its factorization.

259319887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15254128.

The product of its digits is 1088640, while the sum is 52.

The square root of 259319887 is about 16103.4122781478. The cubic root of 259319887 is about 637.6934280151.

The spelling of 259319887 in words is "two hundred fifty-nine million, three hundred nineteen thousand, eight hundred eighty-seven".