828939 has 8 divisors (see below), whose sum is σ = 1128960. Its totient is φ = 540776.

The previous prime is 828923. The next prime is 828941. The reversal of 828939 is 939828.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 828939 - 2⁴ = 828923 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 828897 and 828906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2799 + ... + 3080.

It is an arithmetic number, because the mean of its divisors is an integer number (141120).

2⁸²⁸⁹³⁹ is an apocalyptic number.

828939 is a deficient number, since it is larger than the sum of its proper divisors (300021).

828939 is a wasteful number, since it uses less digits than its factorization.

828939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929.

The product of its digits is 31104, while the sum is 39.

The square root of 828939 is about 910.4608723059. The cubic root of 828939 is about 93.9379022488.

Subtracting 828939 from its reverse (939828), we obtain a square (110889 = 333²).

The spelling of 828939 in words is "eight hundred twenty-eight thousand, nine hundred thirty-nine".