8999985 has 8 divisors (see below), whose sum is σ = 14400000. Its totient is φ = 4799984.

The previous prime is 8999981. The next prime is 8999993. The reversal of 8999985 is 5899998.

8999985 is nontrivially palindromic in base 11.

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 8999985 - 2² = 8999981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999981) 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, 299985 + ... + 300014.

It is an arithmetic number, because the mean of its divisors is an integer number (1800000).

Almost surely, 2^8999985 is an apocalyptic number.

It is an amenable number.

8999985 is a deficient number, since it is larger than the sum of its proper divisors (5400015).

8999985 is a wasteful number, since it uses less digits than its factorization.

8999985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600007.

The product of its digits is 2099520, while the sum is 57.

The square root of 8999985 is about 2999.9974999990. The cubic root of 8999985 is about 208.0082667449.

The spelling of 8999985 in words is "eight million, nine hundred ninety-nine thousand, nine hundred eighty-five".