13854809 has 4 divisors (see below), whose sum is σ = 14457216. Its totient is φ = 13252404.

The previous prime is 13854803. The next prime is 13854823. The reversal of 13854809 is 90845831.

13854809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90845831 = 911 ⋅99721.

It is a cyclic number.

It is not a de Polignac number, because 13854809 - 2¹⁶ = 13789273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13854803) 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, 301169 + ... + 301214.

It is an arithmetic number, because the mean of its divisors is an integer number (3614304).

Almost surely, 2^13854809 is an apocalyptic number.

It is an amenable number.

13854809 is a deficient number, since it is larger than the sum of its proper divisors (602407).

13854809 is an equidigital number, since it uses as much as digits as its factorization.

13854809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602406.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 13854809 is about 3722.2048573393. The cubic root of 13854809 is about 240.1781605364.

The spelling of 13854809 in words is "thirteen million, eight hundred fifty-four thousand, eight hundred nine".