9799776 has 72 divisors (see below), whose sum is σ = 31855824. Its totient is φ = 2799360.

The previous prime is 9799759. The next prime is 9799781. The reversal of 9799776 is 6779979.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (442442).

Almost surely, 2^9799776 is an apocalyptic number.

9799776 is a gapful number since it is divisible by the number (96) 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 9799776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15927912).

9799776 is an abundant number, since it is smaller than the sum of its proper divisors (22056048).

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

9799776 is a wasteful number, since it uses less digits than its factorization.

9799776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884 (or 4873 counting only the distinct ones).

The product of its digits is 1500282, while the sum is 54.

The square root of 9799776 is about 3130.4593912076. The cubic root of 9799776 is about 213.9958656435.

The spelling of 9799776 in words is "nine million, seven hundred ninety-nine thousand, seven hundred seventy-six".