13499799 has 4 divisors (see below), whose sum is σ = 17999736. Its totient is φ = 8999864.

The previous prime is 13499797. The next prime is 13499803. The reversal of 13499799 is 99799431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13499799 - 2¹ = 13499797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13499791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2249964 + ... + 2249969.

It is an arithmetic number, because the mean of its divisors is an integer number (4499934).

Almost surely, 2^13499799 is an apocalyptic number.

13499799 is a deficient number, since it is larger than the sum of its proper divisors (4499937).

13499799 is an equidigital number, since it uses as much as digits as its factorization.

13499799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499936.

The product of its digits is 551124, while the sum is 51.

The square root of 13499799 is about 3674.2072614375. The cubic root of 13499799 is about 238.1089760575.

The spelling of 13499799 in words is "thirteen million, four hundred ninety-nine thousand, seven hundred ninety-nine".