13649323 has 4 divisors (see below), whose sum is σ = 13669768. Its totient is φ = 13628880.

The previous prime is 13649303. The next prime is 13649341. The reversal of 13649323 is 32394631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13649323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13649303) 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 3 ways as a sum of consecutive naturals, for example, 9186 + ... + 10567.

It is an arithmetic number, because the mean of its divisors is an integer number (3417442).

Almost surely, 2^13649323 is an apocalyptic number.

13649323 is a deficient number, since it is larger than the sum of its proper divisors (20445).

13649323 is an equidigital number, since it uses as much as digits as its factorization.

13649323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20444.

The product of its digits is 11664, while the sum is 31.

The square root of 13649323 is about 3694.4990188116. The cubic root of 13649323 is about 238.9848499118.

The spelling of 13649323 in words is "thirteen million, six hundred forty-nine thousand, three hundred twenty-three".