13885649 has 2 divisors, whose sum is σ = 13885650. Its totient is φ = 13885648.

The previous prime is 13885643. The next prime is 13885679. The reversal of 13885649 is 94658831.

13885649 is digitally balanced in base 2, 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., 11730625 + 2155024 = 3425^2 + 1468^2 .

It is an emirp because it is prime and its reverse (94658831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13885649 - 2⁸ = 13885393 is a prime.

It is a super-2 number, since 2×13885649² = 385622496302402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13885643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942824 + 6942825.

It is an arithmetic number, because the mean of its divisors is an integer number (6942825).

Almost surely, 2^13885649 is an apocalyptic number.

It is an amenable number.

13885649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13885649 is an equidigital number, since it uses as much as digits as its factorization.

13885649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 13885649 is about 3726.3452604395. The cubic root of 13885649 is about 240.3562360176.

The spelling of 13885649 in words is "thirteen million, eight hundred eighty-five thousand, six hundred forty-nine".