12199679 has 4 divisors (see below), whose sum is σ = 12215784. Its totient is φ = 12183576.

The previous prime is 12199669. The next prime is 12199697. The reversal of 12199679 is 97699121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12199679 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 (12199609) 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, 6857 + ... + 8450.

It is an arithmetic number, because the mean of its divisors is an integer number (3053946).

Almost surely, 2^12199679 is an apocalyptic number.

12199679 is a deficient number, since it is larger than the sum of its proper divisors (16105).

12199679 is an equidigital number, since it uses as much as digits as its factorization.

12199679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16104.

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

The square root of 12199679 is about 3492.8038879960. The cubic root of 12199679 is about 230.2057327434.

The spelling of 12199679 in words is "twelve million, one hundred ninety-nine thousand, six hundred seventy-nine".