859995961 has 8 divisors (see below), whose sum is σ = 940218048. Its totient is φ = 780114000.

The previous prime is 859995947. The next prime is 859995971. The reversal of 859995961 is 169599958.

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 859995961 - 2⁷ = 859995833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 859995961.

It is not an unprimeable number, because it can be changed into a prime (859995971) 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, 79725 + ... + 89866.

It is an arithmetic number, because the mean of its divisors is an integer number (117527256).

Almost surely, 2^859995961 is an apocalyptic number.

It is an amenable number.

859995961 is a deficient number, since it is larger than the sum of its proper divisors (80222087).

859995961 is a wasteful number, since it uses less digits than its factorization.

859995961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170063.

The product of its digits is 7873200, while the sum is 61.

The square root of 859995961 is about 29325.6877327711. The cubic root of 859995961 is about 950.9670525585.

The spelling of 859995961 in words is "eight hundred fifty-nine million, nine hundred ninety-five thousand, nine hundred sixty-one".