12199287 has 8 divisors (see below), whose sum is σ = 16289536. Its totient is φ = 8120952.

The previous prime is 12199283. The next prime is 12199289. The reversal of 12199287 is 78299121.

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

It is not a de Polignac number, because 12199287 - 2² = 12199283 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 (12199283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223 + ... + 4944.

It is an arithmetic number, because the mean of its divisors is an integer number (2036192).

Almost surely, 2^12199287 is an apocalyptic number.

12199287 is a deficient number, since it is larger than the sum of its proper divisors (4090249).

12199287 is an equidigital number, since it uses as much as digits as its factorization.

12199287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5957.

The product of its digits is 18144, while the sum is 39.

The square root of 12199287 is about 3492.7477721702. The cubic root of 12199287 is about 230.2032670607.

The spelling of 12199287 in words is "twelve million, one hundred ninety-nine thousand, two hundred eighty-seven".