13889213 has 8 divisors (see below), whose sum is σ = 15002400. Its totient is φ = 12782448.

The previous prime is 13889203. The next prime is 13889219. The reversal of 13889213 is 31298831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13889213 - 2¹⁴ = 13872829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13889219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3518 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (1875300).

Almost surely, 2^13889213 is an apocalyptic number.

13889213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13889213 is a deficient number, since it is larger than the sum of its proper divisors (1113187).

13889213 is a wasteful number, since it uses less digits than its factorization.

13889213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211.

The product of its digits is 10368, while the sum is 35.

The square root of 13889213 is about 3726.8234463146. The cubic root of 13889213 is about 240.3767981665.

It can be divided in two parts, 1388 and 9213, that added together give a palindrome (10601).

The spelling of 13889213 in words is "thirteen million, eight hundred eighty-nine thousand, two hundred thirteen".