99834991 has 8 divisors (see below), whose sum is σ = 102942000. Its totient is φ = 96749568.

The previous prime is 99834983. The next prime is 99835027. The reversal of 99834991 is 19943899.

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 99834991 - 2³ = 99834983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99834901) 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, 4260 + ... + 14758.

It is an arithmetic number, because the mean of its divisors is an integer number (12867750).

Almost surely, 2^99834991 is an apocalyptic number.

99834991 is a deficient number, since it is larger than the sum of its proper divisors (3107009).

99834991 is a wasteful number, since it uses less digits than its factorization.

99834991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10793.

The product of its digits is 629856, while the sum is 52.

The square root of 99834991 is about 9991.7461436928. The cubic root of 99834991 is about 463.9034414984.

It can be divided in two parts, 9983 and 4991, that multiplied together give a triangular number (49825153 = T₉₉₈₂).

The spelling of 99834991 in words is "ninety-nine million, eight hundred thirty-four thousand, nine hundred ninety-one".