838109 has 4 divisors (see below), whose sum is σ = 882240. Its totient is φ = 793980.

The previous prime is 838099. The next prime is 838133. The reversal of 838109 is 901838.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 838109 - 2⁴ = 838093 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 838109.

It is not an unprimeable number, because it can be changed into a prime (838139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22037 + ... + 22074.

It is an arithmetic number, because the mean of its divisors is an integer number (220560).

2⁸³⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

838109 is a deficient number, since it is larger than the sum of its proper divisors (44131).

838109 is a wasteful number, since it uses less digits than its factorization.

838109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44130.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 838109 is about 915.4829326645. The cubic root of 838109 is about 94.2830235578.

It can be divided in two parts, 83 and 8109, that added together give a 13-th power (8192 = 2¹³).

The spelling of 838109 in words is "eight hundred thirty-eight thousand, one hundred nine".