3995638579 has 8 divisors (see below), whose sum is σ = 4005777888. Its totient is φ = 3985512960.

The previous prime is 3995638553. The next prime is 3995638609. The reversal of 3995638579 is 9758365993.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3995638579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3995638579.

It is not an unprimeable number, because it can be changed into a prime (3995638519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801954 + ... + 806920.

It is an arithmetic number, because the mean of its divisors is an integer number (500722236).

Almost surely, 2^3995638579 is an apocalyptic number.

3995638579 is a deficient number, since it is larger than the sum of its proper divisors (10139309).

3995638579 is a wasteful number, since it uses less digits than its factorization.

3995638579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6845.

The product of its digits is 55112400, while the sum is 64.

The square root of 3995638579 is about 63211.0637388741. The cubic root of 3995638579 is about 1586.8238984596.

The spelling of 3995638579 in words is "three billion, nine hundred ninety-five million, six hundred thirty-eight thousand, five hundred seventy-nine".