939920 has 40 divisors (see below), whose sum is σ = 2261760. Its totient is φ = 362880.

The previous prime is 939901. The next prime is 939923. The reversal of 939920 is 29939.

939920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 939920.

It is not an unprimeable number, because it can be changed into a prime (939923) 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, 2291 + ... + 2669.

It is an arithmetic number, because the mean of its divisors is an integer number (56544).

2⁹³⁹⁹²⁰ 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 939920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130880).

939920 is an abundant number, since it is smaller than the sum of its proper divisors (1321840).

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

939920 is a wasteful number, since it uses less digits than its factorization.

939920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 939920 is about 969.4947137556. The cubic root of 939920 is about 97.9558318250.

The spelling of 939920 in words is "nine hundred thirty-nine thousand, nine hundred twenty".