939828 has 36 divisors (see below), whose sum is σ = 2338112. Its totient is φ = 293760.

The previous prime is 939823. The next prime is 939839. The reversal of 939828 is 828939.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939823) by changing a digit.

939828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 3333 + ... + 3603.

2⁹³⁹⁸²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 939828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169056).

939828 is an abundant number, since it is smaller than the sum of its proper divisors (1398284).

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

939828 is a wasteful number, since it uses less digits than its factorization.

939828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 293 counting only the distinct ones).

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

The square root of 939828 is about 969.4472651981. The cubic root of 939828 is about 97.9526357266.

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

The spelling of 939828 in words is "nine hundred thirty-nine thousand, eight hundred twenty-eight".