13827389 has 4 divisors (see below), whose sum is σ = 13846140. Its totient is φ = 13808640.

The previous prime is 13827377. The next prime is 13827397. The reversal of 13827389 is 98372831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98372831 = 191 ⋅515041.

It can be written as a sum of positive squares in 2 ways, for example, as 10824100 + 3003289 = 3290^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 13827389 - 2²⁰ = 12778813 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 (13827589) 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, 8222 + ... + 9759.

It is an arithmetic number, because the mean of its divisors is an integer number (3461535).

Almost surely, 2^13827389 is an apocalyptic number.

It is an amenable number.

13827389 is a deficient number, since it is larger than the sum of its proper divisors (18751).

13827389 is an equidigital number, since it uses as much as digits as its factorization.

13827389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18750.

The product of its digits is 72576, while the sum is 41.

The square root of 13827389 is about 3718.5197323666. The cubic root of 13827389 is about 240.0196106661.

The spelling of 13827389 in words is "thirteen million, eight hundred twenty-seven thousand, three hundred eighty-nine".