99869867 has 2 divisors, whose sum is σ = 99869868. Its totient is φ = 99869866.

The previous prime is 99869843. The next prime is 99869873. The reversal of 99869867 is 76896899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99869867 - 2¹² = 99865771 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99869897) 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, 49934933 + 49934934.

It is an arithmetic number, because the mean of its divisors is an integer number (49934934).

Almost surely, 2^99869867 is an apocalyptic number.

99869867 is a deficient number, since it is larger than the sum of its proper divisors (1).

99869867 is an equidigital number, since it uses as much as digits as its factorization.

99869867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 62.

The square root of 99869867 is about 9993.4912317968. The cubic root of 99869867 is about 463.9574546677.

The spelling of 99869867 in words is "ninety-nine million, eight hundred sixty-nine thousand, eight hundred sixty-seven".