39538845 has 12 divisors (see below), whose sum is σ = 68534076. Its totient is φ = 21087360.

The previous prime is 39538841. The next prime is 39538853. The reversal of 39538845 is 54883593.

It is a happy number.

39538845 is a `hidden beast` number, since 39 + 538 + 84 + 5 = 666.

39538845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10830681 + 28708164 = 3291^2 + 5358^2 .

It is not a de Polignac number, because 39538845 - 2² = 39538841 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 878641 = 39538845 / (3 + 9 + 5 + 3 + 8 + 8 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 39538845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39538841) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 439276 + ... + 439365.

It is an arithmetic number, because the mean of its divisors is an integer number (5711173).

Almost surely, 2^39538845 is an apocalyptic number.

It is an amenable number.

39538845 is a deficient number, since it is larger than the sum of its proper divisors (28995231).

39538845 is a wasteful number, since it uses less digits than its factorization.

39538845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878652 (or 878649 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 39538845 is about 6287.9921278577. The cubic root of 39538845 is about 340.6758327750.

The spelling of 39538845 in words is "thirty-nine million, five hundred thirty-eight thousand, eight hundred forty-five".