99909986904 has 192 divisors, whose sum is σ = 333209298240. Its totient is φ = 26335964160.

The previous prime is 99909986903. The next prime is 99909986923. The reversal of 99909986904 is 40968990999.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99909986903) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 19895914 + ... + 19900934.

It is an arithmetic number, because the mean of its divisors is an integer number (1735465095).

Almost surely, 2^99909986904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99909986904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166604649120).

99909986904 is an abundant number, since it is smaller than the sum of its proper divisors (233299311336).

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

99909986904 is a wasteful number, since it uses less digits than its factorization.

99909986904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8090 (or 8083 counting only the distinct ones).

The product of its (nonzero) digits is 102036672, while the sum is 72.

The spelling of 99909986904 in words is "ninety-nine billion, nine hundred nine million, nine hundred eighty-six thousand, nine hundred four".