13709838 has 32 divisors (see below), whose sum is σ = 28142496. Its totient is φ = 4451328.

The previous prime is 13709833. The next prime is 13709873. The reversal of 13709838 is 83890731.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13709796 and 13709805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13709831) 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, 49356 + ... + 49632.

It is an arithmetic number, because the mean of its divisors is an integer number (879453).

Almost surely, 2^13709838 is an apocalyptic number.

13709838 is an abundant number, since it is smaller than the sum of its proper divisors (14432658).

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

13709838 is a wasteful number, since it uses less digits than its factorization.

13709838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 13709838 is about 3702.6798403319. The cubic root of 13709838 is about 239.3375132576.

The spelling of 13709838 in words is "thirteen million, seven hundred nine thousand, eight hundred thirty-eight".