9856249880 has 16 divisors (see below), whose sum is σ = 22176562320. Its totient is φ = 3942499936.

The previous prime is 9856249873. The next prime is 9856249883. The reversal of 9856249880 is 889426589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9856249883) 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, 123203084 + ... + 123203163.

It is an arithmetic number, because the mean of its divisors is an integer number (1386035145).

Almost surely, 2^9856249880 is an apocalyptic number.

It is an amenable number.

9856249880 is an abundant number, since it is smaller than the sum of its proper divisors (12320312440).

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

9856249880 is a wasteful number, since it uses less digits than its factorization.

9856249880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246406258 (or 246406254 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 59.

The square root of 9856249880 is about 99278.6476539643. The cubic root of 9856249880 is about 2144.0614836038.

The spelling of 9856249880 in words is "nine billion, eight hundred fifty-six million, two hundred forty-nine thousand, eight hundred eighty".