13722899 has 4 divisors (see below), whose sum is σ = 13810464. Its totient is φ = 13635336.

The previous prime is 13722889. The next prime is 13722901. The reversal of 13722899 is 99822731.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13722899 - 2¹⁶ = 13657363 is a prime.

It is a Duffinian number.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (13722889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43547 + ... + 43860.

It is an arithmetic number, because the mean of its divisors is an integer number (3452616).

Almost surely, 2^13722899 is an apocalyptic number.

13722899 is a deficient number, since it is larger than the sum of its proper divisors (87565).

13722899 is an equidigital number, since it uses as much as digits as its factorization.

13722899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87564.

The product of its digits is 54432, while the sum is 41.

The square root of 13722899 is about 3704.4431430378. The cubic root of 13722899 is about 239.4134926407.

The spelling of 13722899 in words is "thirteen million, seven hundred twenty-two thousand, eight hundred ninety-nine".