13809671 has 6 divisors (see below), whose sum is σ = 13919472. Its totient is φ = 13700660.

The previous prime is 13809667. The next prime is 13809673. The reversal of 13809671 is 17690831.

It is not a de Polignac number, because 13809671 - 2² = 13809667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13809673) 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 5 ways as a sum of consecutive naturals, for example, 31826 + ... + 32256.

It is an arithmetic number, because the mean of its divisors is an integer number (2319912).

Almost surely, 2^13809671 is an apocalyptic number.

13809671 is a deficient number, since it is larger than the sum of its proper divisors (109801).

13809671 is an frugal number, since it uses more digits than its factorization.

13809671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 13809671 is about 3716.1365690728. The cubic root of 13809671 is about 239.9170488792.

The spelling of 13809671 in words is "thirteen million, eight hundred nine thousand, six hundred seventy-one".