939445 has 16 divisors (see below), whose sum is σ = 1234800. Its totient is φ = 681984.

The previous prime is 939443. The next prime is 939451. The reversal of 939445 is 544939.

It can be written as a sum of positive squares in 8 ways, for example, as 223729 + 715716 = 473^2 + 846^2 .

It is a cyclic number.

It is not a de Polignac number, because 939445 - 2¹ = 939443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 939445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6231 + ... + 6379.

It is an arithmetic number, because the mean of its divisors is an integer number (77175).

2⁹³⁹⁴⁴⁵ is an apocalyptic number.

939445 is the 485-th decagonal number.

It is an amenable number.

939445 is a deficient number, since it is larger than the sum of its proper divisors (295355).

939445 is a wasteful number, since it uses less digits than its factorization.

939445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its digits is 19440, while the sum is 34.

The square root of 939445 is about 969.2497098271. The cubic root of 939445 is about 97.9393279877.

The spelling of 939445 in words is "nine hundred thirty-nine thousand, four hundred forty-five".