99859000860 has 36 divisors (see below), whose sum is σ = 302905636488. Its totient is φ = 26629066848.

The previous prime is 99859000859. The next prime is 99859000933. The reversal of 99859000860 is 6800095899.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 99859000797 and 99859000806.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 277385934 + ... + 277386293.

It is an arithmetic number, because the mean of its divisors is an integer number (8414045458).

Almost surely, 2^99859000860 is an apocalyptic number.

99859000860 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99859000860 is an abundant number, since it is smaller than the sum of its proper divisors (203046635628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99859000860 is a wasteful number, since it uses less digits than its factorization.

99859000860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554772242 (or 554772237 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 99859000860 in words is "ninety-nine billion, eight hundred fifty-nine million, eight hundred sixty", and thus it is an aban number.