13785447 has 8 divisors (see below), whose sum is σ = 19794544. Its totient is φ = 8483328.

The previous prime is 13785437. The next prime is 13785449. The reversal of 13785447 is 74458731.

13785447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13785447 - 2⁶ = 13785383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 353473 = 13785447 / (1 + 3 + 7 + 8 + 5 + 4 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13785449) 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, 176698 + ... + 176775.

It is an arithmetic number, because the mean of its divisors is an integer number (2474318).

Almost surely, 2^13785447 is an apocalyptic number.

13785447 is a deficient number, since it is larger than the sum of its proper divisors (6009097).

13785447 is a wasteful number, since it uses less digits than its factorization.

13785447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353489.

The product of its digits is 94080, while the sum is 39.

The square root of 13785447 is about 3712.8758395616. The cubic root of 13785447 is about 239.7766846349.

The spelling of 13785447 in words is "thirteen million, seven hundred eighty-five thousand, four hundred forty-seven".