13890211 has 4 divisors (see below), whose sum is σ = 13914000. Its totient is φ = 13866424.

The previous prime is 13890209. The next prime is 13890223. The reversal of 13890211 is 11209831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13890211 - 2¹ = 13890209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13890011) 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, 10996 + ... + 12193.

It is an arithmetic number, because the mean of its divisors is an integer number (3478500).

Almost surely, 2^13890211 is an apocalyptic number.

13890211 is a deficient number, since it is larger than the sum of its proper divisors (23789).

13890211 is an equidigital number, since it uses as much as digits as its factorization.

13890211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23788.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13890211 is about 3726.9573380977. The cubic root of 13890211 is about 240.3825553993.

The spelling of 13890211 in words is "thirteen million, eight hundred ninety thousand, two hundred eleven".