13986709 has 8 divisors (see below), whose sum is σ = 15315552. Its totient is φ = 12667440.

The previous prime is 13986697. The next prime is 13986743. The reversal of 13986709 is 90768931.

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 13986709 - 2¹¹ = 13984661 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 (13986769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867 + ... + 5359.

It is an arithmetic number, because the mean of its divisors is an integer number (1914444).

Almost surely, 2^13986709 is an apocalyptic number.

It is an amenable number.

13986709 is a deficient number, since it is larger than the sum of its proper divisors (1328843).

13986709 is a wasteful number, since it uses less digits than its factorization.

13986709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4787.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 13986709 is about 3739.8808804560. The cubic root of 13986709 is about 240.9379327433.

The spelling of 13986709 in words is "thirteen million, nine hundred eighty-six thousand, seven hundred nine".