12199906 has 8 divisors (see below), whose sum is σ = 18550764. Its totient is φ = 6016320.

The previous prime is 12199903. The next prime is 12199907. The reversal of 12199906 is 60999121.

It can be written as a sum of positive squares in 2 ways, for example, as 11964681 + 235225 = 3459^2 + 485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12199903) 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, 41635 + ... + 41926.

Almost surely, 2^12199906 is an apocalyptic number.

12199906 is a deficient number, since it is larger than the sum of its proper divisors (6350858).

12199906 is an equidigital number, since it uses as much as digits as its factorization.

12199906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83636.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 12199906 is about 3492.8363832278. The cubic root of 12199906 is about 230.2071605508.

The spelling of 12199906 in words is "twelve million, one hundred ninety-nine thousand, nine hundred six".