9850947840 has 720 divisors, whose sum is σ = 39104892288. Its totient is φ = 2364899328.

The previous prime is 9850947829. The next prime is 9850947893. The reversal of 9850947840 is 487490589.

9850947840 is a `hidden beast` number, since 98 + 509 + 4 + 7 + 8 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 79 ways as a sum of consecutive naturals, for example, 428302069 + ... + 428302091.

Almost surely, 2^9850947840 is an apocalyptic number.

9850947840 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 9850947840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19552446144).

9850947840 is an abundant number, since it is smaller than the sum of its proper divisors (29253944448).

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

9850947840 is an frugal number, since it uses more digits than its factorization.

9850947840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 9850947840 is about 99251.9412404614. The cubic root of 9850947840 is about 2143.6769580862.

The spelling of 9850947840 in words is "nine billion, eight hundred fifty million, nine hundred forty-seven thousand, eight hundred forty".