13885921 has 8 divisors (see below), whose sum is σ = 16257024. Its totient is φ = 11611680.

The previous prime is 13885919. The next prime is 13885931. The reversal of 13885921 is 12958831.

13885921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13885921 - 2¹ = 13885919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13885901) 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 in 7 ways as a sum of consecutive naturals, for example, 23905 + ... + 24478.

It is an arithmetic number, because the mean of its divisors is an integer number (2032128).

Almost surely, 2^13885921 is an apocalyptic number.

It is an amenable number.

13885921 is a deficient number, since it is larger than the sum of its proper divisors (2371103).

13885921 is an equidigital number, since it uses as much as digits as its factorization.

13885921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48431.

The product of its digits is 17280, while the sum is 37.

The square root of 13885921 is about 3726.3817571473. The cubic root of 13885921 is about 240.3578054190.

The spelling of 13885921 in words is "thirteen million, eight hundred eighty-five thousand, nine hundred twenty-one".