99866827 has 4 divisors (see below), whose sum is σ = 99896296. Its totient is φ = 99837360.

The previous prime is 99866813. The next prime is 99866849. The reversal of 99866827 is 72866899.

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 99866827 - 2¹⁹ = 99342539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99866027) 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 in 3 ways as a sum of consecutive naturals, for example, 8874 + ... + 16687.

It is an arithmetic number, because the mean of its divisors is an integer number (24974074).

Almost surely, 2^99866827 is an apocalyptic number.

99866827 is a deficient number, since it is larger than the sum of its proper divisors (29469).

99866827 is a wasteful number, since it uses less digits than its factorization.

99866827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29468.

The product of its digits is 2612736, while the sum is 55.

The square root of 99866827 is about 9993.3391316416. The cubic root of 99866827 is about 463.9527470583.

The spelling of 99866827 in words is "ninety-nine million, eight hundred sixty-six thousand, eight hundred twenty-seven".