9877849920 has 504 divisors, whose sum is σ = 36356287968. Its totient is φ = 2459842560.

The previous prime is 9877849909. The next prime is 9877849939. The reversal of 9877849920 is 299487789.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 119010199 + ... + 119010281.

It is an arithmetic number, because the mean of its divisors is an integer number (72135492).

Almost surely, 2^9877849920 is an apocalyptic number.

9877849920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9877849920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18178143984).

9877849920 is an abundant number, since it is smaller than the sum of its proper divisors (26478438048).

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

9877849920 is a wasteful number, since it uses less digits than its factorization.

9877849920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The square root of 9877849920 is about 99387.3730410458. The cubic root of 9877849920 is about 2145.6265827241.

The spelling of 9877849920 in words is "nine billion, eight hundred seventy-seven million, eight hundred forty-nine thousand, nine hundred twenty".