13859249 has 2 divisors, whose sum is σ = 13859250. Its totient is φ = 13859248.

The previous prime is 13859243. The next prime is 13859291. The reversal of 13859249 is 94295831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8065600 + 5793649 = 2840^2 + 2407^2 .

It is a cyclic number.

It is not a de Polignac number, because 13859249 - 2⁸ = 13858993 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13859243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6929624 + 6929625.

It is an arithmetic number, because the mean of its divisors is an integer number (6929625).

Almost surely, 2^13859249 is an apocalyptic number.

It is an amenable number.

13859249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13859249 is an equidigital number, since it uses as much as digits as its factorization.

13859249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 13859249 is about 3722.8012302566. The cubic root of 13859249 is about 240.2038141353.

The spelling of 13859249 in words is "thirteen million, eight hundred fifty-nine thousand, two hundred forty-nine".