99205447 has 4 divisors (see below), whose sum is σ = 108224136. Its totient is φ = 90186760.

The previous prime is 99205439. The next prime is 99205451. The reversal of 99205447 is 74450299.

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

It is a cyclic number.

It is not a de Polignac number, because 99205447 - 2³ = 99205439 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99205427) 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, 4509328 + ... + 4509349.

It is an arithmetic number, because the mean of its divisors is an integer number (27056034).

Almost surely, 2^99205447 is an apocalyptic number.

99205447 is a deficient number, since it is larger than the sum of its proper divisors (9018689).

99205447 is a wasteful number, since it uses less digits than its factorization.

99205447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9018688.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 99205447 is about 9960.1931206177. The cubic root of 99205447 is about 462.9262835771.

The spelling of 99205447 in words is "ninety-nine million, two hundred five thousand, four hundred forty-seven".