13679849 has 4 divisors (see below), whose sum is σ = 14484564. Its totient is φ = 12875136.

The previous prime is 13679833. The next prime is 13679873. The reversal of 13679849 is 94897631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11971600 + 1708249 = 3460^2 + 1307^2 .

It is a cyclic number.

It is not a de Polignac number, because 13679849 - 2⁴ = 13679833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13679819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402332 + ... + 402365.

It is an arithmetic number, because the mean of its divisors is an integer number (3621141).

Almost surely, 2^13679849 is an apocalyptic number.

It is an amenable number.

13679849 is a deficient number, since it is larger than the sum of its proper divisors (804715).

13679849 is an equidigital number, since it uses as much as digits as its factorization.

13679849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804714.

The product of its digits is 326592, while the sum is 47.

The square root of 13679849 is about 3698.6279888629. The cubic root of 13679849 is about 239.1628763187.

The spelling of 13679849 in words is "thirteen million, six hundred seventy-nine thousand, eight hundred forty-nine".