99866899 has 8 divisors (see below), whose sum is σ = 109033920. Its totient is φ = 90714600.

The previous prime is 99866873. The next prime is 99866909.

99866899 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99866899 - 2⁹ = 99866387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99866899.

It is not an unprimeable number, because it can be changed into a prime (99866849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14392 + ... + 20170.

It is an arithmetic number, because the mean of its divisors is an integer number (13629240).

Almost surely, 2^99866899 is an apocalyptic number.

99866899 is a deficient number, since it is larger than the sum of its proper divisors (9167021).

99866899 is a wasteful number, since it uses less digits than its factorization.

99866899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7361.

The product of its digits is 15116544, while the sum is 64.

The square root of 99866899 is about 9993.3427340405. The cubic root of 99866899 is about 463.9528585554.

The spelling of 99866899 in words is "ninety-nine million, eight hundred sixty-six thousand, eight hundred ninety-nine".