99866873 has 2 divisors, whose sum is σ = 99866874. Its totient is φ = 99866872.

The previous prime is 99866863. The next prime is 99866909. The reversal of 99866873 is 37866899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85525504 + 14341369 = 9248^2 + 3787^2 .

It is a cyclic number.

It is not a de Polignac number, because 99866873 - 2¹⁴ = 99850489 is a prime.

It is not a weakly prime, because it can be changed into another prime (99866813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49933436 + 49933437.

It is an arithmetic number, because the mean of its divisors is an integer number (49933437).

Almost surely, 2^99866873 is an apocalyptic number.

It is an amenable number.

99866873 is a deficient number, since it is larger than the sum of its proper divisors (1).

99866873 is an equidigital number, since it uses as much as digits as its factorization.

99866873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 56.

The square root of 99866873 is about 9993.3414331744. The cubic root of 99866873 is about 463.9528182926.

The spelling of 99866873 in words is "ninety-nine million, eight hundred sixty-six thousand, eight hundred seventy-three".