13985799 has 8 divisors (see below), whose sum is σ = 18999792. Its totient is φ = 9147840.

The previous prime is 13985761. The next prime is 13985813. The reversal of 13985799 is 99758931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13985799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13985399) 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 7 ways as a sum of consecutive naturals, for example, 43822 + ... + 44139.

It is an arithmetic number, because the mean of its divisors is an integer number (2374974).

Almost surely, 2^13985799 is an apocalyptic number.

13985799 is a deficient number, since it is larger than the sum of its proper divisors (5013993).

13985799 is an equidigital number, since it uses as much as digits as its factorization.

13985799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88017.

The product of its digits is 612360, while the sum is 51.

The square root of 13985799 is about 3739.7592168481. The cubic root of 13985799 is about 240.9327073475.

The spelling of 13985799 in words is "thirteen million, nine hundred eighty-five thousand, seven hundred ninety-nine".