13722499 has 12 divisors (see below), whose sum is σ = 16228128. Its totient is φ = 11566800.

The previous prime is 13722479. The next prime is 13722517. The reversal of 13722499 is 99422731.

It is not a de Polignac number, because 13722499 - 2⁹ = 13721987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13722409) 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 11 ways as a sum of consecutive naturals, for example, 694 + ... + 5284.

It is an arithmetic number, because the mean of its divisors is an integer number (1352344).

Almost surely, 2^13722499 is an apocalyptic number.

13722499 is a deficient number, since it is larger than the sum of its proper divisors (2505629).

13722499 is an equidigital number, since it uses as much as digits as its factorization.

13722499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666 (or 4659 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 13722499 is about 3704.3891534233. The cubic root of 13722499 is about 239.4111664479.

The spelling of 13722499 in words is "thirteen million, seven hundred twenty-two thousand, four hundred ninety-nine".