995639689 has 8 divisors (see below), whose sum is σ = 1086413760. Its totient is φ = 904909200.

The previous prime is 995639669. The next prime is 995639717. The reversal of 995639689 is 986936599.

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 995639689 - 2⁵ = 995639657 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 995639689.

It is not an unprimeable number, because it can be changed into a prime (995639669) 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, 53407 + ... + 69595.

It is an arithmetic number, because the mean of its divisors is an integer number (135801720).

Almost surely, 2^995639689 is an apocalyptic number.

It is an amenable number.

995639689 is a deficient number, since it is larger than the sum of its proper divisors (90774071).

995639689 is a wasteful number, since it uses less digits than its factorization.

995639689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21791.

The product of its digits is 28343520, while the sum is 64.

The square root of 995639689 is about 31553.7587142958. The cubic root of 995639689 is about 998.5444453887.

The spelling of 995639689 in words is "nine hundred ninety-five million, six hundred thirty-nine thousand, six hundred eighty-nine".