939664 has 40 divisors (see below), whose sum is σ = 2098080. Its totient is φ = 403200.

The previous prime is 939661. The next prime is 939677. The reversal of 939664 is 466939.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939661) 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, 3204 + ... + 3484.

It is an arithmetic number, because the mean of its divisors is an integer number (52452).

2⁹³⁹⁶⁶⁴ 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 939664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049040).

939664 is an abundant number, since it is smaller than the sum of its proper divisors (1158416).

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

939664 is a wasteful number, since it uses less digits than its factorization.

939664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 313 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 939664 is about 969.3626772266. The cubic root of 939664 is about 97.9469378163.

The spelling of 939664 in words is "nine hundred thirty-nine thousand, six hundred sixty-four".