99115547 has 2 divisors, whose sum is σ = 99115548. Its totient is φ = 99115546.

The previous prime is 99115543. The next prime is 99115619. The reversal of 99115547 is 74551199.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99115547 - 2² = 99115543 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99115543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49557773 + 49557774.

It is an arithmetic number, because the mean of its divisors is an integer number (49557774).

Almost surely, 2^99115547 is an apocalyptic number.

99115547 is a deficient number, since it is larger than the sum of its proper divisors (1).

99115547 is an equidigital number, since it uses as much as digits as its factorization.

99115547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 41.

The square root of 99115547 is about 9955.6791330376. The cubic root of 99115547 is about 462.7864066798.

The spelling of 99115547 in words is "ninety-nine million, one hundred fifteen thousand, five hundred forty-seven".