99868247 has 2 divisors, whose sum is σ = 99868248. Its totient is φ = 99868246.

The previous prime is 99868213. The next prime is 99868261. The reversal of 99868247 is 74286899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99868247 - 2⁸ = 99867991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99868207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49934123 + 49934124.

It is an arithmetic number, because the mean of its divisors is an integer number (49934124).

Almost surely, 2^99868247 is an apocalyptic number.

99868247 is a deficient number, since it is larger than the sum of its proper divisors (1).

99868247 is an equidigital number, since it uses as much as digits as its factorization.

99868247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 99868247 is about 9993.4101787128. The cubic root of 99868247 is about 463.9549460193.

The spelling of 99868247 in words is "ninety-nine million, eight hundred sixty-eight thousand, two hundred forty-seven".