939966 has 16 divisors (see below), whose sum is σ = 1926288. Its totient is φ = 305600.

The previous prime is 939931. The next prime is 939971. The reversal of 939966 is 669939.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 939966.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1665 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (120393).

2⁹³⁹⁹⁶⁶ is an apocalyptic number.

939966 is an abundant number, since it is smaller than the sum of its proper divisors (986322).

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

939966 is a wasteful number, since it uses less digits than its factorization.

939966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867.

The product of its digits is 78732, while the sum is 42.

The square root of 939966 is about 969.5184371635. The cubic root of 939966 is about 97.9574297961.

The spelling of 939966 in words is "nine hundred thirty-nine thousand, nine hundred sixty-six".