800000000099 has 4 divisors (see below), whose sum is σ = 800002375200. Its totient is φ = 799997625000.

The previous prime is 800000000081. The next prime is 800000000101. The reversal of 800000000099 is 990000000008.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 800000000099 - 2³² = 795705032803 is a prime.

It is a Duffinian number.

800000000099 is a modest number, since divided by 99 gives 80 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 799999999996 and 800000000077.

It is not an unprimeable number, because it can be changed into a prime (830000000099) 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 in 3 ways as a sum of consecutive naturals, for example, 578027 + ... + 1390724.

It is an arithmetic number, because the mean of its divisors is an integer number (200000593800).

Almost surely, 2^800000000099 is an apocalyptic number.

800000000099 is a deficient number, since it is larger than the sum of its proper divisors (2375101).

800000000099 is a wasteful number, since it uses less digits than its factorization.

800000000099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375100.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 800000000099 in words is "eight hundred billion, ninety-nine", and thus it is an aban number.