13868009 has 4 divisors (see below), whose sum is σ = 14103120. Its totient is φ = 13632900.

The previous prime is 13867999. The next prime is 13868017. The reversal of 13868009 is 90086831.

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: 90086831 = 107 ⋅841933.

It is a cyclic number.

It is not a de Polignac number, because 13868009 - 2⁸ = 13867753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13868009.

It is not an unprimeable number, because it can be changed into a prime (13868089) 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, 117467 + ... + 117584.

It is an arithmetic number, because the mean of its divisors is an integer number (3525780).

Almost surely, 2^13868009 is an apocalyptic number.

It is an amenable number.

13868009 is a deficient number, since it is larger than the sum of its proper divisors (235111).

13868009 is an equidigital number, since it uses as much as digits as its factorization.

13868009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235110.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 13868009 is about 3723.9775778058. The cubic root of 13868009 is about 240.2544119284.

The spelling of 13868009 in words is "thirteen million, eight hundred sixty-eight thousand, nine".