995959861 has 4 divisors (see below), whose sum is σ = 1072572172. Its totient is φ = 919347552.

The previous prime is 995959859. The next prime is 995959931. The reversal of 995959861 is 168959599.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 278255761 + 717704100 = 16681^2 + 26790^2 .

It is a cyclic number.

It is not a de Polignac number, because 995959861 - 2¹ = 995959859 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 995959861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (995959831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38306136 + ... + 38306161.

It is an arithmetic number, because the mean of its divisors is an integer number (268143043).

Almost surely, 2^995959861 is an apocalyptic number.

995959861 is the 18221-st hex number.

It is an amenable number.

995959861 is a deficient number, since it is larger than the sum of its proper divisors (76612311).

995959861 is a wasteful number, since it uses less digits than its factorization.

995959861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76612310.

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

The square root of 995959861 is about 31558.8317432696. The cubic root of 995959861 is about 998.6514692824.

The spelling of 995959861 in words is "nine hundred ninety-five million, nine hundred fifty-nine thousand, eight hundred sixty-one".