102859859 has 2 divisors, whose sum is σ = 102859860. Its totient is φ = 102859858.

The previous prime is 102859853. The next prime is 102859871. The reversal of 102859859 is 958958201.

It is a weak prime.

It is an emirp because it is prime and its reverse (958958201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102859859 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (102859853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51429929 + 51429930.

It is an arithmetic number, because the mean of its divisors is an integer number (51429930).

Almost surely, 2^102859859 is an apocalyptic number.

102859859 is a deficient number, since it is larger than the sum of its proper divisors (1).

102859859 is an equidigital number, since it uses as much as digits as its factorization.

102859859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 47.

The square root of 102859859 is about 10141.9849635069. The cubic root of 102859859 is about 468.5421235541.

The spelling of 102859859 in words is "one hundred two million, eight hundred fifty-nine thousand, eight hundred fifty-nine".