13840249 has 2 divisors, whose sum is σ = 13840250. Its totient is φ = 13840248.

The previous prime is 13840237. The next prime is 13840271. The reversal of 13840249 is 94204831.

13840249 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13838400 + 1849 = 3720^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 13840249 - 2⁵ = 13840217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13840249.

It is not a weakly prime, because it can be changed into another prime (13840349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6920124 + 6920125.

It is an arithmetic number, because the mean of its divisors is an integer number (6920125).

Almost surely, 2^13840249 is an apocalyptic number.

It is an amenable number.

13840249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13840249 is an equidigital number, since it uses as much as digits as its factorization.

13840249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 13840249 is about 3720.2485132045. The cubic root of 13840249 is about 240.0939967459.

The spelling of 13840249 in words is "thirteen million, eight hundred forty thousand, two hundred forty-nine".