9999199 has 8 divisors (see below), whose sum is σ = 11463200. Its totient is φ = 8544096.

The previous prime is 9999193. The next prime is 9999217. The reversal of 9999199 is 9919999.

It is a happy number.

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 9999199 - 2⁵ = 9999167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999193) 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 7 ways as a sum of consecutive naturals, for example, 397 + ... + 4489.

It is an arithmetic number, because the mean of its divisors is an integer number (1432900).

Almost surely, 2^9999199 is an apocalyptic number.

9999199 is a deficient number, since it is larger than the sum of its proper divisors (1464001).

9999199 is a wasteful number, since it uses less digits than its factorization.

9999199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449.

The product of its digits is 531441, while the sum is 55.

The square root of 9999199 is about 3162.1510084118. The cubic root of 9999199 is about 215.4377165090.

The spelling of 9999199 in words is "nine million, nine hundred ninety-nine thousand, one hundred ninety-nine".