9856844900 has 54 divisors (see below), whose sum is σ = 24881505138. Its totient is φ = 3379488000.

The previous prime is 9856844873. The next prime is 9856844923. The reversal of 9856844900 is 94486589.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1517824 + 9855327076 = 1232^2 + 99274^2 .

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 1000901 + ... + 1010700.

Almost surely, 2^9856844900 is an apocalyptic number.

It is an amenable number.

9856844900 is an abundant number, since it is smaller than the sum of its proper divisors (15024660238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9856844900 is a wasteful number, since it uses less digits than its factorization.

9856844900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011629 (or 2011615 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The square root of 9856844900 is about 99281.6443256255. The cubic root of 9856844900 is about 2144.1046282686.

The spelling of 9856844900 in words is "nine billion, eight hundred fifty-six million, eight hundred forty-four thousand, nine hundred".