939906 has 48 divisors (see below), whose sum is σ = 2291328. Its totient is φ = 276000.

The previous prime is 939901. The next prime is 939923. The reversal of 939906 is 609939.

939906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (939901) by changing a digit.

939906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9256 + ... + 9356.

It is an arithmetic number, because the mean of its divisors is an integer number (47736).

2⁹³⁹⁹⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 939906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1145664).

939906 is an abundant number, since it is smaller than the sum of its proper divisors (1351422).

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

939906 is a wasteful number, since it uses less digits than its factorization.

939906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 939906 is about 969.4874934727. The cubic root of 939906 is about 97.9553454757.

It can be divided in two parts, 93 and 9906, that added together give a palindrome (9999).

The spelling of 939906 in words is "nine hundred thirty-nine thousand, nine hundred six".