99886851 has 16 divisors (see below), whose sum is σ = 149810720. Its totient is φ = 66589776.

The previous prime is 99886811. The next prime is 99886873. The reversal of 99886851 is 15868899.

It is a de Polignac number, because none of the positive numbers 2^k-99886851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99886811) 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 in 15 ways as a sum of consecutive naturals, for example, 20650 + ... + 25023.

It is an arithmetic number, because the mean of its divisors is an integer number (9363170).

Almost surely, 2^99886851 is an apocalyptic number.

99886851 is a deficient number, since it is larger than the sum of its proper divisors (49923869).

99886851 is an frugal number, since it uses more digits than its factorization.

99886851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45694 (or 45676 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The square root of 99886851 is about 9994.3409487570. The cubic root of 99886851 is about 463.9837535805.

The spelling of 99886851 in words is "ninety-nine million, eight hundred eighty-six thousand, eight hundred fifty-one".