99591100 has 72 divisors (see below), whose sum is σ = 261545760. Its totient is φ = 32133120.

The previous prime is 99591077. The next prime is 99591143. The reversal of 99591100 is 119599.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7716 + ... + 16084.

It is an arithmetic number, because the mean of its divisors is an integer number (3632580).

Almost surely, 2^99591100 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 99591100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130772880).

99591100 is an abundant number, since it is smaller than the sum of its proper divisors (161954660).

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

99591100 is a wasteful number, since it uses less digits than its factorization.

99591100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407 (or 8400 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 99591100 is about 9979.5340572594. The cubic root of 99591100 is about 463.5253705391.

The spelling of 99591100 in words is "ninety-nine million, five hundred ninety-one thousand, one hundred".