13885905 has 32 divisors (see below), whose sum is σ = 25297920. Its totient is φ = 6438080.

The previous prime is 13885901. The next prime is 13885919. The reversal of 13885905 is 50958831.

It is not a de Polignac number, because 13885905 - 2² = 13885901 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 31 ways as a sum of consecutive naturals, for example, 1966 + ... + 5624.

It is an arithmetic number, because the mean of its divisors is an integer number (790560).

Almost surely, 2^13885905 is an apocalyptic number.

13885905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13885905 is a deficient number, since it is larger than the sum of its proper divisors (11412015).

13885905 is a wasteful number, since it uses less digits than its factorization.

13885905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 13885905 is about 3726.3796102920. The cubic root of 13885905 is about 240.3577131018.

The spelling of 13885905 in words is "thirteen million, eight hundred eighty-five thousand, nine hundred five".