9896140644 has 48 divisors (see below), whose sum is σ = 25473759360. Its totient is φ = 2970696960.

The previous prime is 9896140643. The next prime is 9896140649. The reversal of 9896140644 is 4460416989.

It is not an unprimeable number, because it can be changed into a prime (9896140643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767224 + ... + 780015.

It is an arithmetic number, because the mean of its divisors is an integer number (530703320).

Almost surely, 2^9896140644 is an apocalyptic number.

It is an amenable number.

9896140644 is an abundant number, since it is smaller than the sum of its proper divisors (15577618716).

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

9896140644 is a wasteful number, since it uses less digits than its factorization.

9896140644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547300 (or 1547298 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 9896140644 is about 99479.3478265715. The cubic root of 9896140644 is about 2146.9501118186.

The spelling of 9896140644 in words is "nine billion, eight hundred ninety-six million, one hundred forty thousand, six hundred forty-four".