9854999980 has 48 divisors (see below), whose sum is σ = 24680355840. Its totient is φ = 3231949248.

The previous prime is 9854999969. The next prime is 9855000053. The reversal of 9854999980 is 899994589.

It is a Harshad number since it is a multiple of its sum of digits (70).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1527060 + ... + 1533499.

It is an arithmetic number, because the mean of its divisors is an integer number (514174080).

Almost surely, 2^9854999980 is an apocalyptic number.

It is an amenable number.

9854999980 is an abundant number, since it is smaller than the sum of its proper divisors (14825355860).

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

9854999980 is a wasteful number, since it uses less digits than its factorization.

9854999980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060598 (or 3060596 counting only the distinct ones).

The product of its (nonzero) digits is 75582720, while the sum is 70.

The square root of 9854999980 is about 99272.3525459128. The cubic root of 9854999980 is about 2143.9708481942.

The spelling of 9854999980 in words is "nine billion, eight hundred fifty-four million, nine hundred ninety-nine thousand, nine hundred eighty".