838829 has 4 divisors (see below), whose sum is σ = 865920. Its totient is φ = 811740.

The previous prime is 838813. The next prime is 838837. The reversal of 838829 is 928838.

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, and also an emirpimes, since its reverse is a distinct semiprime: 928838 = 2 ⋅464419.

It is a cyclic number.

It is not a de Polignac number, because 838829 - 2⁴ = 838813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 838792 and 838801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13499 + ... + 13560.

It is an arithmetic number, because the mean of its divisors is an integer number (216480).

2⁸³⁸⁸²⁹ is an apocalyptic number.

It is an amenable number.

838829 is a deficient number, since it is larger than the sum of its proper divisors (27091).

838829 is a wasteful number, since it uses less digits than its factorization.

838829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27090.

The product of its digits is 27648, while the sum is 38.

The square root of 838829 is about 915.8760833213. The cubic root of 838829 is about 94.3100146163.

Subtracting 838829 from its reverse (928838), we obtain a palindrome (90009).

The spelling of 838829 in words is "eight hundred thirty-eight thousand, eight hundred twenty-nine".