99859000823 has 8 divisors (see below), whose sum is σ = 101775229488. Its totient is φ = 97943961024.

The previous prime is 99859000789. The next prime is 99859000859. The reversal of 99859000823 is 32800095899.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99859000823 - 2⁸ = 99859000567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99859000523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126686 + ... + 464507.

It is an arithmetic number, because the mean of its divisors is an integer number (12721903686).

Almost surely, 2^99859000823 is an apocalyptic number.

99859000823 is a deficient number, since it is larger than the sum of its proper divisors (1916228665).

99859000823 is a wasteful number, since it uses less digits than its factorization.

99859000823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594433.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 99859000823 in words is "ninety-nine billion, eight hundred fifty-nine million, eight hundred twenty-three", and thus it is an aban number.