13857199 has 4 divisors (see below), whose sum is σ = 13887720. Its totient is φ = 13826680.

The previous prime is 13857197. The next prime is 13857229. The reversal of 13857199 is 99175831.

13857199 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99175831 = 599 ⋅165569.

It is a cyclic number.

It is not a de Polignac number, because 13857199 - 2¹ = 13857197 is a prime.

It is a super-4 number, since 4×13857199⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14569 + ... + 15490.

It is an arithmetic number, because the mean of its divisors is an integer number (3471930).

Almost surely, 2^13857199 is an apocalyptic number.

13857199 is a deficient number, since it is larger than the sum of its proper divisors (30521).

13857199 is an equidigital number, since it uses as much as digits as its factorization.

13857199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30520.

The product of its digits is 68040, while the sum is 43.

The square root of 13857199 is about 3722.5258897689. The cubic root of 13857199 is about 240.1919702492.

The spelling of 13857199 in words is "thirteen million, eight hundred fifty-seven thousand, one hundred ninety-nine".