13986009 has 12 divisors (see below), whose sum is σ = 20545200. Its totient is φ = 9165624.

The previous prime is 13985989. The next prime is 13986013. The reversal of 13986009 is 90068931.

It is not a de Polignac number, because 13986009 - 2⁵ = 13985977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13986029) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12639 + ... + 13700.

It is an arithmetic number, because the mean of its divisors is an integer number (1712100).

Almost surely, 2^13986009 is an apocalyptic number.

It is an amenable number.

13986009 is a deficient number, since it is larger than the sum of its proper divisors (6559191).

13986009 is a wasteful number, since it uses less digits than its factorization.

13986009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26404 (or 26401 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 13986009 is about 3739.7872934166. The cubic root of 13986009 is about 240.9339132282.

The spelling of 13986009 in words is "thirteen million, nine hundred eighty-six thousand, nine".