13809983 has 4 divisors (see below), whose sum is σ = 15065448. Its totient is φ = 12554520.

The previous prime is 13809977. The next prime is 13810031. The reversal of 13809983 is 38990831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13809983 - 2⁶ = 13809919 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 13809983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13809283) 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, 627716 + ... + 627737.

It is an arithmetic number, because the mean of its divisors is an integer number (3766362).

Almost surely, 2^13809983 is an apocalyptic number.

13809983 is a deficient number, since it is larger than the sum of its proper divisors (1255465).

13809983 is a wasteful number, since it uses less digits than its factorization.

13809983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255464.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 13809983 is about 3716.1785479172. The cubic root of 13809983 is about 239.9188556699.

The spelling of 13809983 in words is "thirteen million, eight hundred nine thousand, nine hundred eighty-three".