39007945 has 8 divisors (see below), whose sum is σ = 49563144. Its totient is φ = 29370624.

The previous prime is 39007921. The next prime is 39007949. The reversal of 39007945 is 54970093.

39007945 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 4 ways, for example, as 2005056 + 37002889 = 1416^2 + 6083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39007945 - 2¹⁵ = 38975177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39007949) 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 7 ways as a sum of consecutive naturals, for example, 229374 + ... + 229543.

It is an arithmetic number, because the mean of its divisors is an integer number (6195393).

Almost surely, 2^39007945 is an apocalyptic number.

It is an amenable number.

39007945 is a deficient number, since it is larger than the sum of its proper divisors (10555199).

39007945 is a wasteful number, since it uses less digits than its factorization.

39007945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458939.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 39007945 is about 6245.6340750960. The cubic root of 39007945 is about 339.1441710925.

The spelling of 39007945 in words is "thirty-nine million, seven thousand, nine hundred forty-five".