939945556 has 24 divisors (see below), whose sum is σ = 1795219776. Its totient is φ = 427062720.

The previous prime is 939945511. The next prime is 939945569. The reversal of 939945556 is 655549939.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 939945497 and 939945506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187920 + ... + 192856.

It is an arithmetic number, because the mean of its divisors is an integer number (74800824).

Almost surely, 2^939945556 is an apocalyptic number.

It is an amenable number.

939945556 is a deficient number, since it is larger than the sum of its proper divisors (855274220).

939945556 is a wasteful number, since it uses less digits than its factorization.

939945556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9279 (or 9277 counting only the distinct ones).

The product of its digits is 6561000, while the sum is 55.

The square root of 939945556 is about 30658.5315369148. The cubic root of 939945556 is about 979.5671960858.

The spelling of 939945556 in words is "nine hundred thirty-nine million, nine hundred forty-five thousand, five hundred fifty-six".