99434147 has 4 divisors (see below), whose sum is σ = 99671880. Its totient is φ = 99196416.

The previous prime is 99434141. The next prime is 99434161. The reversal of 99434147 is 74143499.

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 99434147 - 2¹⁶ = 99368611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99434141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118238 + ... + 119075.

It is an arithmetic number, because the mean of its divisors is an integer number (24917970).

Almost surely, 2^99434147 is an apocalyptic number.

99434147 is a deficient number, since it is larger than the sum of its proper divisors (237733).

99434147 is a wasteful number, since it uses less digits than its factorization.

99434147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237732.

The product of its digits is 108864, while the sum is 41.

The square root of 99434147 is about 9971.6672126581. The cubic root of 99434147 is about 463.2817411744.

The spelling of 99434147 in words is "ninety-nine million, four hundred thirty-four thousand, one hundred forty-seven".