13784609 has 8 divisors (see below), whose sum is σ = 14208960. Its totient is φ = 13363056.

The previous prime is 13784591. The next prime is 13784621. The reversal of 13784609 is 90648731.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13784609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13784629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13532 + ... + 14514.

It is an arithmetic number, because the mean of its divisors is an integer number (1776120).

Almost surely, 2^13784609 is an apocalyptic number.

It is an amenable number.

13784609 is a deficient number, since it is larger than the sum of its proper divisors (424351).

13784609 is an equidigital number, since it uses as much as digits as its factorization.

13784609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13784609 is about 3712.7629873182. The cubic root of 13784609 is about 239.7718259620.

The spelling of 13784609 in words is "thirteen million, seven hundred eighty-four thousand, six hundred nine".