939715645 has 12 divisors (see below), whose sum is σ = 1239493500. Its totient is φ = 683429120.

The previous prime is 939715643. The next prime is 939715663. The reversal of 939715645 is 546517939.

It can be written as a sum of positive squares in 2 ways, for example, as 160300921 + 779414724 = 12661^2 + 27918^2 .

It is not a de Polignac number, because 939715645 - 2¹ = 939715643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939715643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 776020 + ... + 777229.

It is an arithmetic number, because the mean of its divisors is an integer number (103291125).

Almost surely, 2^939715645 is an apocalyptic number.

It is an amenable number.

939715645 is a deficient number, since it is larger than the sum of its proper divisors (299777855).

939715645 is a wasteful number, since it uses less digits than its factorization.

939715645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553276 (or 1553265 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 49.

The square root of 939715645 is about 30654.7817640250. The cubic root of 939715645 is about 979.4873220842.

The spelling of 939715645 in words is "nine hundred thirty-nine million, seven hundred fifteen thousand, six hundred forty-five".