13847149 has 2 divisors, whose sum is σ = 13847150. Its totient is φ = 13847148.

The previous prime is 13847147. The next prime is 13847159. The reversal of 13847149 is 94174831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11764900 + 2082249 = 3430^2 + 1443^2 .

It is a cyclic number.

It is not a de Polignac number, because 13847149 - 2¹ = 13847147 is a prime.

Together with 13847147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13847147) 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, 6923574 + 6923575.

It is an arithmetic number, because the mean of its divisors is an integer number (6923575).

Almost surely, 2^13847149 is an apocalyptic number.

It is an amenable number.

13847149 is a deficient number, since it is larger than the sum of its proper divisors (1).

13847149 is an equidigital number, since it uses as much as digits as its factorization.

13847149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 13847149 is about 3721.1757550538. The cubic root of 13847149 is about 240.1338894133.

The spelling of 13847149 in words is "thirteen million, eight hundred forty-seven thousand, one hundred forty-nine".