13858985 has 8 divisors (see below), whose sum is σ = 19006656. Its totient is φ = 9503280.

The previous prime is 13858981. The next prime is 13858993. The reversal of 13858985 is 58985831.

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

It is not a de Polignac number, because 13858985 - 2² = 13858981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13858981) 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, 197951 + ... + 198020.

It is an arithmetic number, because the mean of its divisors is an integer number (2375832).

Almost surely, 2^13858985 is an apocalyptic number.

It is an amenable number.

13858985 is a deficient number, since it is larger than the sum of its proper divisors (5147671).

13858985 is an equidigital number, since it uses as much as digits as its factorization.

13858985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395983.

The product of its digits is 345600, while the sum is 47.

The square root of 13858985 is about 3722.7657729167. The cubic root of 13858985 is about 240.2022889394.

The spelling of 13858985 in words is "thirteen million, eight hundred fifty-eight thousand, nine hundred eighty-five".