13049839 has 4 divisors (see below), whose sum is σ = 14236200. Its totient is φ = 11863480.

The previous prime is 13049837. The next prime is 13049843. The reversal of 13049839 is 93894031.

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 13049839 - 2¹ = 13049837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13049798 and 13049807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13049833) 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, 593164 + ... + 593185.

It is an arithmetic number, because the mean of its divisors is an integer number (3559050).

Almost surely, 2^13049839 is an apocalyptic number.

13049839 is a deficient number, since it is larger than the sum of its proper divisors (1186361).

13049839 is a wasteful number, since it uses less digits than its factorization.

13049839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186360.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 13049839 is about 3612.4560896985. The cubic root of 13049839 is about 235.4335680802.

The spelling of 13049839 in words is "thirteen million, forty-nine thousand, eight hundred thirty-nine".