99986539 has 2 divisors, whose sum is σ = 99986540. Its totient is φ = 99986538.

The previous prime is 99986527. The next prime is 99986597. The reversal of 99986539 is 93568999.

It is an a-pointer prime, because the next prime (99986597) can be obtained adding 99986539 to its sum of digits (58).

It is a weak prime.

It is an emirp because it is prime and its reverse (93568999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99986539 - 2⁵ = 99986507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99986039) 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, 49993269 + 49993270.

It is an arithmetic number, because the mean of its divisors is an integer number (49993270).

Almost surely, 2^99986539 is an apocalyptic number.

99986539 is a deficient number, since it is larger than the sum of its proper divisors (1).

99986539 is an equidigital number, since it uses as much as digits as its factorization.

99986539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4723920, while the sum is 58.

The square root of 99986539 is about 9999.3269273487. The cubic root of 99986539 is about 464.1380556176.

The spelling of 99986539 in words is "ninety-nine million, nine hundred eighty-six thousand, five hundred thirty-nine".