868610959 has 2 divisors, whose sum is σ = 868610960. Its totient is φ = 868610958.

The previous prime is 868610909. The next prime is 868610983. The reversal of 868610959 is 959016868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868610959 - 2⁹ = 868610447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868610909) 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, 434305479 + 434305480.

It is an arithmetic number, because the mean of its divisors is an integer number (434305480).

Almost surely, 2^868610959 is an apocalyptic number.

868610959 is a deficient number, since it is larger than the sum of its proper divisors (1).

868610959 is an equidigital number, since it uses as much as digits as its factorization.

868610959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 52.

The square root of 868610959 is about 29472.2065512577. The cubic root of 868610959 is about 954.1319411206.

The spelling of 868610959 in words is "eight hundred sixty-eight million, six hundred ten thousand, nine hundred fifty-nine".