13890385 has 8 divisors (see below), whose sum is σ = 16695360. Its totient is φ = 11094384.

The previous prime is 13890379. The next prime is 13890407. The reversal of 13890385 is 58309831.

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 13890385 - 2⁷ = 13890257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1846 + ... + 5584.

It is an arithmetic number, because the mean of its divisors is an integer number (2086920).

Almost surely, 2^13890385 is an apocalyptic number.

It is an amenable number.

13890385 is a deficient number, since it is larger than the sum of its proper divisors (2804975).

13890385 is an equidigital number, since it uses as much as digits as its factorization.

13890385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 13890385 is about 3726.9806814632. The cubic root of 13890385 is about 240.3835591371.

The spelling of 13890385 in words is "thirteen million, eight hundred ninety thousand, three hundred eighty-five".