9978448799 has 6 divisors (see below), whose sum is σ = 10968047160. Its totient is φ = 9071316980.

The previous prime is 9978448783. The next prime is 9978448811.

9978448799 is nontrivially palindromic in base 10.

9978448799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9978448799 - 2⁴ = 9978448783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978448769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41233139 + ... + 41233380.

It is an arithmetic number, because the mean of its divisors is an integer number (1828007860).

Almost surely, 2^9978448799 is an apocalyptic number.

9978448799 is a deficient number, since it is larger than the sum of its proper divisors (989598361).

9978448799 is a wasteful number, since it uses less digits than its factorization.

9978448799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82466541 (or 82466530 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 74.

The square root of 9978448799 is about 99892.1858755729. The cubic root of 9978448799 is about 2152.8858883791.

The spelling of 9978448799 in words is "nine billion, nine hundred seventy-eight million, four hundred forty-eight thousand, seven hundred ninety-nine".