13439634 has 32 divisors (see below), whose sum is σ = 29502144. Its totient is φ = 4056000.

The previous prime is 13439633. The next prime is 13439653. The reversal of 13439634 is 43693431.

It is a junction number, because it is equal to n+sod(n) for n = 13439595 and 13439604.

It is not an unprimeable number, because it can be changed into a prime (13439633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2509 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (921942).

Almost surely, 2^13439634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13439634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14751072).

13439634 is an abundant number, since it is smaller than the sum of its proper divisors (16062510).

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

13439634 is a wasteful number, since it uses less digits than its factorization.

13439634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322.

The product of its digits is 23328, while the sum is 33.

The square root of 13439634 is about 3666.0106382824. The cubic root of 13439634 is about 237.7547198812.

The spelling of 13439634 in words is "thirteen million, four hundred thirty-nine thousand, six hundred thirty-four".