859964887 has 2 divisors, whose sum is σ = 859964888. Its totient is φ = 859964886.

The previous prime is 859964821. The next prime is 859964921. The reversal of 859964887 is 788469958.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 859964887 - 2⁷ = 859964759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859964587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429982443 + 429982444.

It is an arithmetic number, because the mean of its divisors is an integer number (429982444).

Almost surely, 2^859964887 is an apocalyptic number.

859964887 is a deficient number, since it is larger than the sum of its proper divisors (1).

859964887 is an equidigital number, since it uses as much as digits as its factorization.

859964887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34836480, while the sum is 64.

The square root of 859964887 is about 29325.1579194384. The cubic root of 859964887 is about 950.9555987427.

The spelling of 859964887 in words is "eight hundred fifty-nine million, nine hundred sixty-four thousand, eight hundred eighty-seven".