13899211 has 4 divisors (see below), whose sum is σ = 13906672. Its totient is φ = 13891752.

The previous prime is 13899209. The next prime is 13899233. The reversal of 13899211 is 11299831.

13899211 is digitally balanced in base 2, 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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11299831 = 23 ⋅491297.

It is a cyclic number.

It is not a de Polignac number, because 13899211 - 2¹ = 13899209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13899271) 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, 1690 + ... + 5536.

It is an arithmetic number, because the mean of its divisors is an integer number (3476668).

Almost surely, 2^13899211 is an apocalyptic number.

13899211 is a deficient number, since it is larger than the sum of its proper divisors (7461).

13899211 is an equidigital number, since it uses as much as digits as its factorization.

13899211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7460.

The product of its digits is 3888, while the sum is 34.

The square root of 13899211 is about 3728.1645618186. The cubic root of 13899211 is about 240.4344618800.

The spelling of 13899211 in words is "thirteen million, eight hundred ninety-nine thousand, two hundred eleven".