13809305 has 8 divisors (see below), whose sum is σ = 16924032. Its totient is φ = 10812208.

The previous prime is 13809293. The next prime is 13809311. The reversal of 13809305 is 50390831.

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 13809305 - 2¹⁰ = 13808281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29147 + ... + 29616.

It is an arithmetic number, because the mean of its divisors is an integer number (2115504).

Almost surely, 2^13809305 is an apocalyptic number.

It is an amenable number.

13809305 is a deficient number, since it is larger than the sum of its proper divisors (3114727).

13809305 is an equidigital number, since it uses as much as digits as its factorization.

13809305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58815.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 13809305 is about 3716.0873240547. The cubic root of 13809305 is about 239.9149293401.

The spelling of 13809305 in words is "thirteen million, eight hundred nine thousand, three hundred five".