99591198 has 64 divisors (see below), whose sum is σ = 246167040. Its totient is φ = 26220672.

The previous prime is 99591197. The next prime is 99591209. The reversal of 99591198 is 89119599.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99591198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99591197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27840 + ... + 31212.

It is an arithmetic number, because the mean of its divisors is an integer number (3846360).

Almost surely, 2^99591198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99591198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123083520).

99591198 is an abundant number, since it is smaller than the sum of its proper divisors (146575842).

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

99591198 is a wasteful number, since it uses less digits than its factorization.

99591198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441.

The product of its digits is 262440, while the sum is 51.

The square root of 99591198 is about 9979.5389673071. The cubic root of 99591198 is about 463.5255225790.

The spelling of 99591198 in words is "ninety-nine million, five hundred ninety-one thousand, one hundred ninety-eight".