99999199986 has 16 divisors (see below), whose sum is σ = 228569600064. Its totient is φ = 28571199984.

The previous prime is 99999199973. The next prime is 99999199987. The reversal of 99999199986 is 68999199999.

It is not an unprimeable number, because it can be changed into a prime (99999199987) 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 7 ways as a sum of consecutive naturals, for example, 1190466625 + ... + 1190466708.

It is an arithmetic number, because the mean of its divisors is an integer number (14285600004).

Almost surely, 2^99999199986 is an apocalyptic number.

99999199986 is an abundant number, since it is smaller than the sum of its proper divisors (128570400078).

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

99999199986 is a wasteful number, since it uses less digits than its factorization.

99999199986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380933345.

The product of its digits is 2066242608, while the sum is 87.

The spelling of 99999199986 in words is "ninety-nine billion, nine hundred ninety-nine million, one hundred ninety-nine thousand, nine hundred eighty-six".