12199967 has 4 divisors (see below), whose sum is σ = 13138440. Its totient is φ = 11261496.

The previous prime is 12199951. The next prime is 12199969. The reversal of 12199967 is 76999121.

12199967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76999121 = 1621 ⋅47501.

It is a cyclic number.

It is not a de Polignac number, because 12199967 - 2⁴ = 12199951 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 (12199969) 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, 469217 + ... + 469242.

It is an arithmetic number, because the mean of its divisors is an integer number (3284610).

Almost surely, 2^12199967 is an apocalyptic number.

12199967 is a deficient number, since it is larger than the sum of its proper divisors (938473).

12199967 is an equidigital number, since it uses as much as digits as its factorization.

12199967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938472.

The product of its digits is 61236, while the sum is 44.

The square root of 12199967 is about 3492.8451153751. The cubic root of 12199967 is about 230.2075442318.

The spelling of 12199967 in words is "twelve million, one hundred ninety-nine thousand, nine hundred sixty-seven".