13699 has 8 divisors (see below), whose sum is σ = 16640. Its totient is φ = 11016.

The previous prime is 13697. The next prime is 13709. The reversal of 13699 is 99631.

It is a happy number.

13699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13699 - 2¹ = 13697 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (13691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82 + ... + 184.

It is an arithmetic number, because the mean of its divisors is an integer number (2080).

2¹³⁶⁹⁹ is an apocalyptic number.

13699 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13699 is a deficient number, since it is larger than the sum of its proper divisors (2941).

13699 is a wasteful number, since it uses less digits than its factorization.

13699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129.

The product of its digits is 1458, while the sum is 28.

The square root of 13699 is about 117.0427272410. The cubic root of 13699 is about 23.9274429026.

It can be divided in two parts, 1369 and 9, that multiplied together give a palindrome (12321).

The spelling of 13699 in words is "thirteen thousand, six hundred ninety-nine".