14243706409 has 9 divisors (see below), whose sum is σ = 14892793783. Its totient is φ = 13621789192.

The previous prime is 14243706403. The next prime is 14243706419. The reversal of 14243706409 is 90460734241.

The square root of 14243706409 is 119347.

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

It can be written as a sum of positive squares in only one way, i.e., 11247238809 + 2996467600 = 106053^2 + 54740^2 .

It is not a de Polignac number, because 14243706409 - 2⁹ = 14243705897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14243706403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2742387 + ... + 2747575.

Almost surely, 2^14243706409 is an apocalyptic number.

14243706409 is the 119347-th square number.

14243706409 is the 59674-th centered octagonal number.

It is an amenable number.

14243706409 is a deficient number, since it is larger than the sum of its proper divisors (649087374).

14243706409 is an frugal number, since it uses more digits than its factorization.

14243706409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10424 (or 5212 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 14243706409 in words is "fourteen billion, two hundred forty-three million, seven hundred six thousand, four hundred nine".