3969860585 has 4 divisors (see below), whose sum is σ = 4763832708. Its totient is φ = 3175888464.

The previous prime is 3969860581. The next prime is 3969860591. The reversal of 3969860585 is 5850689693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5850689693 = 43 ⋅136062551.

It can be written as a sum of positive squares in 2 ways, for example, as 765960976 + 3203899609 = 27676^2 + 56603^2 .

It is a cyclic number.

It is not a de Polignac number, because 3969860585 - 2² = 3969860581 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3969860581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396986054 + ... + 396986063.

It is an arithmetic number, because the mean of its divisors is an integer number (1190958177).

Almost surely, 2^3969860585 is an apocalyptic number.

It is an amenable number.

3969860585 is a deficient number, since it is larger than the sum of its proper divisors (793972123).

3969860585 is an equidigital number, since it uses as much as digits as its factorization.

3969860585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793972122.

The product of its (nonzero) digits is 13996800, while the sum is 59.

The square root of 3969860585 is about 63006.8296694890. The cubic root of 3969860585 is about 1583.4040512335.

The spelling of 3969860585 in words is "three billion, nine hundred sixty-nine million, eight hundred sixty thousand, five hundred eighty-five".