13899309 has 8 divisors (see below), whose sum is σ = 19033440. Its totient is φ = 9015696.

The previous prime is 13899307. The next prime is 13899311. The reversal of 13899309 is 90399831.

It is a happy number.

13899309 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13899307) and next prime (13899311).

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

It is not a de Polignac number, because 13899309 - 2¹ = 13899307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13899307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62499 + ... + 62720.

It is an arithmetic number, because the mean of its divisors is an integer number (2379180).

Almost surely, 2^13899309 is an apocalyptic number.

It is an amenable number.

13899309 is a deficient number, since it is larger than the sum of its proper divisors (5134131).

13899309 is a wasteful number, since it uses less digits than its factorization.

13899309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125259.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 13899309 is about 3728.1777049921. The cubic root of 13899309 is about 240.4350269606.

The spelling of 13899309 in words is "thirteen million, eight hundred ninety-nine thousand, three hundred nine".