3939307605 has 12 divisors (see below), whose sum is σ = 6828133260. Its totient is φ = 2100964032.

The previous prime is 3939307573. The next prime is 3939307607. The reversal of 3939307605 is 5067039393.

3939307605 is a `hidden beast` number, since 3 + 9 + 3 + 9 + 30 + 7 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1047234321 + 2892073284 = 32361^2 + 53778^2 .

It is not a de Polignac number, because 3939307605 - 2⁵ = 3939307573 is a prime.

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: 87540169 = 3939307605 / (3 + 9 + 3 + 9 + 3 + 0 + 7 + 6 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939307607) 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, 43770040 + ... + 43770129.

It is an arithmetic number, because the mean of its divisors is an integer number (569011105).

Almost surely, 2^3939307605 is an apocalyptic number.

It is an amenable number.

3939307605 is a deficient number, since it is larger than the sum of its proper divisors (2888825655).

3939307605 is a wasteful number, since it uses less digits than its factorization.

3939307605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87540180 (or 87540177 counting only the distinct ones).

The product of its (nonzero) digits is 459270, while the sum is 45.

The square root of 3939307605 is about 62763.9036787866. The cubic root of 3939307605 is about 1579.3315023025.

The spelling of 3939307605 in words is "three billion, nine hundred thirty-nine million, three hundred seven thousand, six hundred five".