9949757220 has 288 divisors, whose sum is σ = 34122816000. Its totient is φ = 2328403968.

The previous prime is 9949757203. The next prime is 9949757267. The reversal of 9949757220 is 227579499.

9949757220 is a `hidden beast` number, since 9 + 9 + 49 + 7 + 572 + 20 = 666.

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, 10709716 + ... + 10710644.

It is an arithmetic number, because the mean of its divisors is an integer number (118482000).

Almost surely, 2^9949757220 is an apocalyptic number.

9949757220 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 9949757220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17061408000).

9949757220 is an abundant number, since it is smaller than the sum of its proper divisors (24173058780).

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

9949757220 is a wasteful number, since it uses less digits than its factorization.

9949757220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 9949757220 is about 99748.4697626986. The cubic root of 9949757220 is about 2150.8204707040.

The spelling of 9949757220 in words is "nine billion, nine hundred forty-nine million, seven hundred fifty-seven thousand, two hundred twenty".