99786851 has 4 divisors (see below), whose sum is σ = 99840000. Its totient is φ = 99733704.

The previous prime is 99786847. The next prime is 99786859. The reversal of 99786851 is 15868799.

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 99786851 - 2² = 99786847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99786793 and 99786802.

It is not an unprimeable number, because it can be changed into a prime (99786859) 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 3 ways as a sum of consecutive naturals, for example, 23651 + ... + 27548.

It is an arithmetic number, because the mean of its divisors is an integer number (24960000).

Almost surely, 2^99786851 is an apocalyptic number.

99786851 is a deficient number, since it is larger than the sum of its proper divisors (53149).

99786851 is a wasteful number, since it uses less digits than its factorization.

99786851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53148.

The product of its digits is 1088640, while the sum is 53.

The square root of 99786851 is about 9989.3368648775. The cubic root of 99786851 is about 463.8288654340.

The spelling of 99786851 in words is "ninety-nine million, seven hundred eighty-six thousand, eight hundred fifty-one".