939428 has 18 divisors (see below), whose sum is σ = 1912806. Its totient is φ = 402528.

The previous prime is 939413. The next prime is 939431. The reversal of 939428 is 824939.

939428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 906304 + 33124 = 952^2 + 182^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2201 + ... + 2592.

It is an arithmetic number, because the mean of its divisors is an integer number (106267).

2⁹³⁹⁴²⁸ is an apocalyptic number.

939428 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

939428 is an abundant number, since it is smaller than the sum of its proper divisors (973378).

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

939428 is a wasteful number, since it uses less digits than its factorization.

939428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811 (or 4802 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 939428 is about 969.2409401176. The cubic root of 939428 is about 97.9387372210.

The spelling of 939428 in words is "nine hundred thirty-nine thousand, four hundred twenty-eight".