13722447 has 4 divisors (see below), whose sum is σ = 18296600. Its totient is φ = 9148296.

The previous prime is 13722431. The next prime is 13722469. The reversal of 13722447 is 74422731.

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

It is not a de Polignac number, because 13722447 - 2⁴ = 13722431 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 (13722407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2287072 + ... + 2287077.

It is an arithmetic number, because the mean of its divisors is an integer number (4574150).

Almost surely, 2^13722447 is an apocalyptic number.

13722447 is a deficient number, since it is larger than the sum of its proper divisors (4574153).

13722447 is an equidigital number, since it uses as much as digits as its factorization.

13722447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4574152.

The product of its digits is 9408, while the sum is 30.

The square root of 13722447 is about 3704.3821347156. The cubic root of 13722447 is about 239.4108640395.

The spelling of 13722447 in words is "thirteen million, seven hundred twenty-two thousand, four hundred forty-seven".