939424 has 24 divisors (see below), whose sum is σ = 1911168. Its totient is φ = 454080.

The previous prime is 939413. The next prime is 939431. The reversal of 939424 is 424939.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519 + ... + 1465.

It is an arithmetic number, because the mean of its divisors is an integer number (79632).

2⁹³⁹⁴²⁴ 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 939424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955584).

939424 is an abundant number, since it is smaller than the sum of its proper divisors (971744).

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

939424 is a wasteful number, since it uses less digits than its factorization.

939424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 980 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 939424 is about 969.2388766450. The cubic root of 939424 is about 97.9385982160.

It can be divided in two parts, 9394 and 24, that multiplied together give a triangular number (225456 = T₆₇₁).

The spelling of 939424 in words is "nine hundred thirty-nine thousand, four hundred twenty-four".