13899 has 8 divisors (see below), whose sum is σ = 19152. Its totient is φ = 8960.

The previous prime is 13883. The next prime is 13901. The reversal of 13899 is 99831.

It is a happy number.

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 13899 - 2⁴ = 13883 is a prime.

It is a plaindrome in base 10.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (13829) 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, 67 + ... + 179.

It is an arithmetic number, because the mean of its divisors is an integer number (2394).

2¹³⁸⁹⁹ is an apocalyptic number.

13899 is a deficient number, since it is larger than the sum of its proper divisors (5253).

13899 is a wasteful number, since it uses less digits than its factorization.

13899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157.

The product of its digits is 1944, while the sum is 30.

The square root of 13899 is about 117.8940202046. The cubic root of 13899 is about 24.0433245218.

The spelling of 13899 in words is "thirteen thousand, eight hundred ninety-nine".