13999499 has 4 divisors (see below), whose sum is σ = 14007000. Its totient is φ = 13992000.

The previous prime is 13999481. The next prime is 13999519. The reversal of 13999499 is 99499931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13999499 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 13999499.

It is not an unprimeable number, because it can be changed into a prime (13999459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1499 + ... + 5499.

It is an arithmetic number, because the mean of its divisors is an integer number (3501750).

Almost surely, 2^13999499 is an apocalyptic number.

13999499 is a deficient number, since it is larger than the sum of its proper divisors (7501).

13999499 is an equidigital number, since it uses as much as digits as its factorization.

13999499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500.

The product of its digits is 708588, while the sum is 53.

The square root of 13999499 is about 3741.5904372339. The cubic root of 13999499 is about 241.0113514278.

The spelling of 13999499 in words is "thirteen million, nine hundred ninety-nine thousand, four hundred ninety-nine".