13799855 has 4 divisors (see below), whose sum is σ = 16559832. Its totient is φ = 11039880.

The previous prime is 13799831. The next prime is 13799887. The reversal of 13799855 is 55899731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55899731 = 179 ⋅312289.

It is not a de Polignac number, because 13799855 - 2⁶ = 13799791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1379981 + ... + 1379990.

It is an arithmetic number, because the mean of its divisors is an integer number (4139958).

Almost surely, 2^13799855 is an apocalyptic number.

13799855 is a deficient number, since it is larger than the sum of its proper divisors (2759977).

13799855 is an equidigital number, since it uses as much as digits as its factorization.

13799855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759976.

The product of its digits is 340200, while the sum is 47.

The square root of 13799855 is about 3714.8156078061. The cubic root of 13799855 is about 239.8601905621.

The spelling of 13799855 in words is "thirteen million, seven hundred ninety-nine thousand, eight hundred fifty-five".