99191180 has 48 divisors (see below), whose sum is σ = 237129984. Its totient is φ = 34499520.

The previous prime is 99191179. The next prime is 99191231. The reversal of 99191180 is 8119199.

It is a happy number.

It is a super-3 number, since 3×99191180³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4742 + ... + 14861.

It is an arithmetic number, because the mean of its divisors is an integer number (4940208).

Almost surely, 2^99191180 is an apocalyptic number.

It is an amenable number.

99191180 is an abundant number, since it is smaller than the sum of its proper divisors (137938804).

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

99191180 is a wasteful number, since it uses less digits than its factorization.

99191180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19646 (or 19644 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 38.

The square root of 99191180 is about 9959.4768938936. The cubic root of 99191180 is about 462.9040909586.

The spelling of 99191180 in words is "ninety-nine million, one hundred ninety-one thousand, one hundred eighty".