9836420085 has 96 divisors (see below), whose sum is σ = 18195166080. Its totient is φ = 5094835200.

The previous prime is 9836420057. The next prime is 9836420093. The reversal of 9836420085 is 5800246389.

9836420085 is a `hidden beast` number, since 9 + 8 + 364 + 200 + 85 = 666.

9836420085 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9836420085 - 2⁸ = 9836419829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 9836420085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18879625 + ... + 18880145.

It is an arithmetic number, because the mean of its divisors is an integer number (189532980).

Almost surely, 2^9836420085 is an apocalyptic number.

It is an amenable number.

9836420085 is a deficient number, since it is larger than the sum of its proper divisors (8358745995).

9836420085 is a wasteful number, since it uses less digits than its factorization.

9836420085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 9836420085 is about 99178.7279863984. The cubic root of 9836420085 is about 2142.6226387093.

The spelling of 9836420085 in words is "nine billion, eight hundred thirty-six million, four hundred twenty thousand, eighty-five".