14388722209 has 3 divisors (see below), whose sum is σ = 14388842163. Its totient is φ = 14388602256.

The previous prime is 14388722141. The next prime is 14388722213. The reversal of 14388722209 is 90222788341.

The square root of 14388722209 is 119953.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90222788341 = 7 ⋅12888969763.

It can be written as a sum of positive squares in only one way, i.e., 13304469025 + 1084253184 = 115345^2 + 32928^2 .

It is not a de Polignac number, because 14388722209 - 2¹³ = 14388714017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14388722219) 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, 59977 + ... + 179929.

It is an arithmetic number, because the mean of its divisors is an integer number (4796280721).

Almost surely, 2^14388722209 is an apocalyptic number.

14388722209 is the 119953-rd square number.

14388722209 is the 59977-th centered octagonal number.

It is an amenable number.

14388722209 is a deficient number, since it is larger than the sum of its proper divisors (119954).

14388722209 is an frugal number, since it uses more digits than its factorization.

14388722209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239906 (or 119953 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 14388722209 in words is "fourteen billion, three hundred eighty-eight million, seven hundred twenty-two thousand, two hundred nine".