13578389 has 8 divisors (see below), whose sum is σ = 14905632. Its totient is φ = 12266640.

The previous prime is 13578379. The next prime is 13578413. The reversal of 13578389 is 98387531.

It is a happy number.

13578389 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 13578389 - 2⁸ = 13578133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13578329) 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, 1994 + ... + 5579.

It is an arithmetic number, because the mean of its divisors is an integer number (1863204).

Almost surely, 2^13578389 is an apocalyptic number.

It is an amenable number.

13578389 is a deficient number, since it is larger than the sum of its proper divisors (1327243).

13578389 is a wasteful number, since it uses less digits than its factorization.

13578389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7747.

The product of its digits is 181440, while the sum is 44.

The square root of 13578389 is about 3684.8865654183. The cubic root of 13578389 is about 238.5701381939.

The spelling of 13578389 in words is "thirteen million, five hundred seventy-eight thousand, three hundred eighty-nine".