13799999 has 4 divisors (see below), whose sum is σ = 14093664. Its totient is φ = 13506336.

The previous prime is 13799939. The next prime is 13800013. The reversal of 13799999 is 99999731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99999731 = 13 ⋅7692287.

It is a cyclic number.

It is not a de Polignac number, because 13799999 - 2¹⁶ = 13734463 is a prime.

It is a Duffinian number.

13799999 is a modest number, since divided by 9999 gives 1379 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13799939) 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, 146762 + ... + 146855.

It is an arithmetic number, because the mean of its divisors is an integer number (3523416).

Almost surely, 2^13799999 is an apocalyptic number.

13799999 is a deficient number, since it is larger than the sum of its proper divisors (293665).

13799999 is an equidigital number, since it uses as much as digits as its factorization.

13799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293664.

The product of its digits is 1240029, while the sum is 56.

The square root of 13799999 is about 3714.8349896059. The cubic root of 13799999 is about 239.8610248642.

The spelling of 13799999 in words is "thirteen million, seven hundred ninety-nine thousand, nine hundred ninety-nine".