9985199 has 4 divisors (see below), whose sum is σ = 11411664. Its totient is φ = 8558736.

The previous prime is 9985187. The next prime is 9985207. The reversal of 9985199 is 9915899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9985199 - 2²⁰ = 8936623 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713222 + ... + 713235.

It is an arithmetic number, because the mean of its divisors is an integer number (2852916).

Almost surely, 2^9985199 is an apocalyptic number.

9985199 is a deficient number, since it is larger than the sum of its proper divisors (1426465).

9985199 is a wasteful number, since it uses less digits than its factorization.

9985199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426464.

The product of its digits is 262440, while the sum is 50.

The square root of 9985199 is about 3159.9365499959. The cubic root of 9985199 is about 215.3371238926.

The spelling of 9985199 in words is "nine million, nine hundred eighty-five thousand, one hundred ninety-nine".