13849813 has 2 divisors, whose sum is σ = 13849814. Its totient is φ = 13849812.

The previous prime is 13849807. The next prime is 13849831. The reversal of 13849813 is 31894831.

13849813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (13849831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13410244 + 439569 = 3662^2 + 663^2 .

It is an emirp because it is prime and its reverse (31894831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13849813 - 2⁹ = 13849301 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13849853) by changing a digit.

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 as a sum of consecutive naturals, namely, 6924906 + 6924907.

It is an arithmetic number, because the mean of its divisors is an integer number (6924907).

Almost surely, 2^13849813 is an apocalyptic number.

It is an amenable number.

13849813 is a deficient number, since it is larger than the sum of its proper divisors (1).

13849813 is an equidigital number, since it uses as much as digits as its factorization.

13849813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 13849813 is about 3721.5336892201. The cubic root of 13849813 is about 240.1492879058.

The spelling of 13849813 in words is "thirteen million, eight hundred forty-nine thousand, eight hundred thirteen".