99032209 has 4 divisors (see below), whose sum is σ = 99390004. Its totient is φ = 98674416.

The previous prime is 99032203. The next prime is 99032233. The reversal of 99032209 is 90223099.

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 25553025 + 73479184 = 5055^2 + 8572^2 .

It is a cyclic number.

It is not a de Polignac number, because 99032209 - 2⁵ = 99032177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99032203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178482 + ... + 179035.

It is an arithmetic number, because the mean of its divisors is an integer number (24847501).

Almost surely, 2^99032209 is an apocalyptic number.

It is an amenable number.

99032209 is a deficient number, since it is larger than the sum of its proper divisors (357795).

99032209 is a wasteful number, since it uses less digits than its factorization.

99032209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357794.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 99032209 is about 9951.4928025900. The cubic root of 99032209 is about 462.6566641412.

The spelling of 99032209 in words is "ninety-nine million, thirty-two thousand, two hundred nine".