9969919848 has 144 divisors (see below), whose sum is σ = 32776267680. Its totient is φ = 2724676416.

The previous prime is 9969919793. The next prime is 9969919877. The reversal of 9969919848 is 8489199699.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19711 + ... + 142577.

It is an arithmetic number, because the mean of its divisors is an integer number (227612970).

Almost surely, 2^9969919848 is an apocalyptic number.

9969919848 is a gapful number since it is divisible by the number (98) 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 9969919848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16388133840).

9969919848 is an abundant number, since it is smaller than the sum of its proper divisors (22806347832).

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

9969919848 is a wasteful number, since it uses less digits than its factorization.

9969919848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122916 (or 122902 counting only the distinct ones).

The product of its digits is 90699264, while the sum is 72.

The square root of 9969919848 is about 99849.4859676303. The cubic root of 9969919848 is about 2152.2723296778.

The spelling of 9969919848 in words is "nine billion, nine hundred sixty-nine million, nine hundred nineteen thousand, eight hundred forty-eight".