99187147 has 2 divisors, whose sum is σ = 99187148. Its totient is φ = 99187146.

The previous prime is 99187141. The next prime is 99187157. The reversal of 99187147 is 74178199.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99187147 - 2¹⁵ = 99154379 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99187097 and 99187106.

It is not a weakly prime, because it can be changed into another prime (99187141) 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 as a sum of consecutive naturals, namely, 49593573 + 49593574.

It is an arithmetic number, because the mean of its divisors is an integer number (49593574).

Almost surely, 2^99187147 is an apocalyptic number.

99187147 is a deficient number, since it is larger than the sum of its proper divisors (1).

99187147 is an equidigital number, since it uses as much as digits as its factorization.

99187147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 46.

The square root of 99187147 is about 9959.2744213622. The cubic root of 99187147 is about 462.8978171565.

The spelling of 99187147 in words is "ninety-nine million, one hundred eighty-seven thousand, one hundred forty-seven".