259654859 has 2 divisors, whose sum is σ = 259654860. Its totient is φ = 259654858.

The previous prime is 259654849. The next prime is 259654907. The reversal of 259654859 is 958456952.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259654859 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259654859.

It is not a weakly prime, because it can be changed into another prime (259654849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129827429 + 129827430.

It is an arithmetic number, because the mean of its divisors is an integer number (129827430).

Almost surely, 2^259654859 is an apocalyptic number.

259654859 is a deficient number, since it is larger than the sum of its proper divisors (1).

259654859 is an equidigital number, since it uses as much as digits as its factorization.

259654859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 53.

The square root of 259654859 is about 16113.8095743992. The cubic root of 259654859 is about 637.9678863760.

The spelling of 259654859 in words is "two hundred fifty-nine million, six hundred fifty-four thousand, eight hundred fifty-nine".