13439838 has 16 divisors (see below), whose sum is σ = 27452160. Its totient is φ = 4384536.

The previous prime is 13439831. The next prime is 13439869. The reversal of 13439838 is 83893431.

It is a junction number, because it is equal to n+sod(n) for n = 13439796 and 13439805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13439831) 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 7 ways as a sum of consecutive naturals, for example, 23548 + ... + 24111.

It is an arithmetic number, because the mean of its divisors is an integer number (1715760).

Almost surely, 2^13439838 is an apocalyptic number.

13439838 is an abundant number, since it is smaller than the sum of its proper divisors (14012322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13439838 is a wasteful number, since it uses less digits than its factorization.

13439838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47711.

The product of its digits is 62208, while the sum is 39.

The square root of 13439838 is about 3666.0384613367. The cubic root of 13439838 is about 237.7559228335.

The spelling of 13439838 in words is "thirteen million, four hundred thirty-nine thousand, eight hundred thirty-eight".