14172188209 has 3 divisors (see below), whose sum is σ = 14172307257. Its totient is φ = 14172069162.

The previous prime is 14172188197. The next prime is 14172188237. The reversal of 14172188209 is 90288127141.

The square root of 14172188209 is 119047.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 14172188209 - 2⁷ = 14172188081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14172188249) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 59524 + ... + 178570.

It is an arithmetic number, because the mean of its divisors is an integer number (4724102419).

Almost surely, 2^14172188209 is an apocalyptic number.

14172188209 is the 119047-th square number.

14172188209 is the 59524-th centered octagonal number.

It is an amenable number.

14172188209 is a deficient number, since it is larger than the sum of its proper divisors (119048).

14172188209 is an frugal number, since it uses more digits than its factorization.

14172188209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238094 (or 119047 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The spelling of 14172188209 in words is "fourteen billion, one hundred seventy-two million, one hundred eighty-eight thousand, two hundred nine".