9279279648 has 144 divisors (see below), whose sum is σ = 27536929056. Its totient is φ = 3073697280.

The previous prime is 9279279623. The next prime is 9279279649. The reversal of 9279279648 is 8469729729.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×9279279648² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9279279649) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1263828 + ... + 1271148.

It is an arithmetic number, because the mean of its divisors is an integer number (191228674).

Almost surely, 2^9279279648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9279279648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13768464528).

9279279648 is an abundant number, since it is smaller than the sum of its proper divisors (18257649408).

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

9279279648 is a wasteful number, since it uses less digits than its factorization.

9279279648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7509 (or 7489 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 9279279648 is about 96329.0176841849. The cubic root of 9279279648 is about 2101.3807735596.

The spelling of 9279279648 in words is "nine billion, two hundred seventy-nine million, two hundred seventy-nine thousand, six hundred forty-eight".