939816 has 64 divisors (see below), whose sum is σ = 2760000. Its totient is φ = 295488.

The previous prime is 939793. The next prime is 939823. The reversal of 939816 is 618939.

939816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×939816² = 1766508227712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

939816 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 15 ways as a sum of consecutive naturals, for example, 3990 + ... + 4218.

It is an arithmetic number, because the mean of its divisors is an integer number (43125).

2⁹³⁹⁸¹⁶ 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 939816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380000).

939816 is an abundant number, since it is smaller than the sum of its proper divisors (1820184).

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

939816 is a wasteful number, since it uses less digits than its factorization.

939816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 253 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 939816 is about 969.4410760846. The cubic root of 939816 is about 97.9522188288.

939816 divided by its sum of digits (36) gives a triangular number (26106 = T₂₂₈).

The spelling of 939816 in words is "nine hundred thirty-nine thousand, eight hundred sixteen".