99000985 has 4 divisors (see below), whose sum is σ = 118801188.
Its totient is φ = 79200784.
The previous prime is 99000977. The next prime is 99000991. The reversal of 99000985 is 58900099.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 21049744 + 77951241 = 4588^2 + 8829^2
It is a cyclic number.
It is not a de Polignac number, because 99000985 - 23 = 99000977 is a prime.
It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9900094 + ... + 9900103.
It is an arithmetic number, because the mean of its divisors is an integer number (29700297).
Almost surely, 299000985 is an apocalyptic number.
It is an amenable number.
99000985 is a deficient number, since it is larger than the sum of its proper divisors (19800203).
99000985 is a wasteful number, since it uses less digits than its factorization.
99000985 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19800202.
The product of its (nonzero) digits is 29160, while the sum is 40.
The square root of 99000985 is about 9949.9238690555.
The cubic root of 99000985 is about 462.6080351469.
The spelling of 99000985 in words is "ninety-nine million, nine hundred eighty-five", and thus it is an aban number.