99071185 has 4 divisors (see below), whose sum is σ = 118885428. Its totient is φ = 79256944.

The previous prime is 99071177. The next prime is 99071213. The reversal of 99071185 is 58117099.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31371201 + 67699984 = 5601^2 + 8228^2 .

It is a cyclic number.

It is not a de Polignac number, because 99071185 - 2³ = 99071177 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9907114 + ... + 9907123.

It is an arithmetic number, because the mean of its divisors is an integer number (29721357).

Almost surely, 2^99071185 is an apocalyptic number.

It is an amenable number.

99071185 is a deficient number, since it is larger than the sum of its proper divisors (19814243).

99071185 is a wasteful number, since it uses less digits than its factorization.

99071185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19814242.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 99071185 is about 9953.4509091069. The cubic root of 99071185 is about 462.7173519422.

The spelling of 99071185 in words is "ninety-nine million, seventy-one thousand, one hundred eighty-five".