899868999 has 8 divisors (see below), whose sum is σ = 1208984832. Its totient is φ = 595332920.

The previous prime is 899868989. The next prime is 899869021. The reversal of 899868999 is 999868998.

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 899868999 - 2¹¹ = 899866951 is a prime.

It is a super-2 number, since 2×899868999² = 1619528430722524002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 899868999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899868919) 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, 1144479 + ... + 1145264.

It is an arithmetic number, because the mean of its divisors is an integer number (151123104).

Almost surely, 2^899868999 is an apocalyptic number.

899868999 is a deficient number, since it is larger than the sum of its proper divisors (309115833).

899868999 is a wasteful number, since it uses less digits than its factorization.

899868999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289877.

The product of its digits is 181398528, while the sum is 75.

The square root of 899868999 is about 29997.8165705439. The cubic root of 899868999 is about 965.4425378604.

Subtracting 899868999 from its reverse (999868998), we obtain a palindrome (99999999).

The spelling of 899868999 in words is "eight hundred ninety-nine million, eight hundred sixty-eight thousand, nine hundred ninety-nine".