3899752705 has 8 divisors (see below), whose sum is σ = 4683033000. Its totient is φ = 3117582336.

The previous prime is 3899752687. The next prime is 3899752721. The reversal of 3899752705 is 5072579983.

It is a Cunningham number, because it is equal to 62448²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 49674304 + 3850078401 = 7048^2 + 62049^2 .

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 3899752705 - 2⁹ = 3899752193 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269730 + ... + 283819.

It is an arithmetic number, because the mean of its divisors is an integer number (585379125).

Almost surely, 2^3899752705 is an apocalyptic number.

It is an amenable number.

3899752705 is a deficient number, since it is larger than the sum of its proper divisors (783280295).

3899752705 is a wasteful number, since it uses less digits than its factorization.

3899752705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554963.

The product of its (nonzero) digits is 4762800, while the sum is 55.

The square root of 3899752705 is about 62448.0000080067. Note that the first 5 decimals coincide. The cubic root of 3899752705 is about 1574.0276460654.

The spelling of 3899752705 in words is "three billion, eight hundred ninety-nine million, seven hundred fifty-two thousand, seven hundred five".