9651408440 has 16 divisors (see below), whose sum is σ = 21715669080. Its totient is φ = 3860563360.

The previous prime is 9651408413. The next prime is 9651408443. The reversal of 9651408440 is 448041569.

9651408440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9651408443) 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 3 ways as a sum of consecutive naturals, for example, 120642566 + ... + 120642645.

Almost surely, 2^9651408440 is an apocalyptic number.

It is an amenable number.

9651408440 is an abundant number, since it is smaller than the sum of its proper divisors (12064260640).

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

9651408440 is a wasteful number, since it uses less digits than its factorization.

9651408440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241285222 (or 241285218 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 9651408440 is about 98241.5820312356. The cubic root of 9651408440 is about 2129.1041101476.

The spelling of 9651408440 in words is "nine billion, six hundred fifty-one million, four hundred eight thousand, four hundred forty".