13885945 has 16 divisors (see below), whose sum is σ = 17147520. Its totient is φ = 10790784.

The previous prime is 13885943. The next prime is 13885981. The reversal of 13885945 is 54958831.

It is a cyclic number.

It is not a de Polignac number, because 13885945 - 2¹ = 13885943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13885943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30157 + ... + 30613.

It is an arithmetic number, because the mean of its divisors is an integer number (1071720).

Almost surely, 2^13885945 is an apocalyptic number.

It is an amenable number.

13885945 is a deficient number, since it is larger than the sum of its proper divisors (3261575).

13885945 is a wasteful number, since it uses less digits than its factorization.

13885945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624.

The product of its digits is 172800, while the sum is 43.

The square root of 13885945 is about 3726.3849774279. The cubic root of 13885945 is about 240.3579438946.

The spelling of 13885945 in words is "thirteen million, eight hundred eighty-five thousand, nine hundred forty-five".