12199799 has 4 divisors (see below), whose sum is σ = 12213264. Its totient is φ = 12186336.

The previous prime is 12199783. The next prime is 12199813. The reversal of 12199799 is 99799121.

It is a happy number.

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 12199799 - 2⁴ = 12199783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12199739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5267 + ... + 7220.

It is an arithmetic number, because the mean of its divisors is an integer number (3053316).

Almost surely, 2^12199799 is an apocalyptic number.

12199799 is a deficient number, since it is larger than the sum of its proper divisors (13465).

12199799 is an equidigital number, since it uses as much as digits as its factorization.

12199799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13464.

The product of its digits is 91854, while the sum is 47.

The square root of 12199799 is about 3492.8210661298. The cubic root of 12199799 is about 230.2064875337.

The spelling of 12199799 in words is "twelve million, one hundred ninety-nine thousand, seven hundred ninety-nine".