13858847 has 4 divisors (see below), whose sum is σ = 14588280. Its totient is φ = 13129416.

The previous prime is 13858841. The next prime is 13858849. The reversal of 13858847 is 74885831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74885831 = 263 ⋅284737.

It is a cyclic number.

It is not a de Polignac number, because 13858847 - 2⁸ = 13858591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13858798 and 13858807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13858841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364688 + ... + 364725.

It is an arithmetic number, because the mean of its divisors is an integer number (3647070).

Almost surely, 2^13858847 is an apocalyptic number.

13858847 is a deficient number, since it is larger than the sum of its proper divisors (729433).

13858847 is an equidigital number, since it uses as much as digits as its factorization.

13858847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729432.

The product of its digits is 215040, while the sum is 44.

The square root of 13858847 is about 3722.7472382637. The cubic root of 13858847 is about 240.2014916702.

It can be divided in two parts, 138 and 58847, that added together give a palindrome (58985).

The spelling of 13858847 in words is "thirteen million, eight hundred fifty-eight thousand, eight hundred forty-seven".