99993996 has 36 divisors (see below), whose sum is σ = 253110312. Its totient is φ = 33285504.

The previous prime is 99993991. The next prime is 99993997. The reversal of 99993996 is 69939999.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (99993991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33751 + ... + 36593.

It is an arithmetic number, because the mean of its divisors is an integer number (7030842).

Almost surely, 2^99993996 is an apocalyptic number.

It is an amenable number.

99993996 is an abundant number, since it is smaller than the sum of its proper divisors (153116316).

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

99993996 is a wasteful number, since it uses less digits than its factorization.

99993996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830 (or 3825 counting only the distinct ones).

The product of its digits is 9565938, while the sum is 63.

The square root of 99993996 is about 9999.6997954939. The cubic root of 99993996 is about 464.1495938089.

The spelling of 99993996 in words is "ninety-nine million, nine hundred ninety-three thousand, nine hundred ninety-six".