12199638 has 16 divisors (see below), whose sum is σ = 26617536. Its totient is φ = 3696840.

The previous prime is 12199609. The next prime is 12199643. The reversal of 12199638 is 83699121.

It is a junction number, because it is equal to n+sod(n) for n = 12199596 and 12199605.

It is a congruent number.

It is an unprimeable number.

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, 92356 + ... + 92487.

It is an arithmetic number, because the mean of its divisors is an integer number (1663596).

Almost surely, 2^12199638 is an apocalyptic number.

12199638 is an abundant number, since it is smaller than the sum of its proper divisors (14417898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12199638 is a wasteful number, since it uses less digits than its factorization.

12199638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184859.

The product of its digits is 23328, while the sum is 39.

The square root of 12199638 is about 3492.7980187809. The cubic root of 12199638 is about 230.2054748556.

The spelling of 12199638 in words is "twelve million, one hundred ninety-nine thousand, six hundred thirty-eight".