9640820984 has 8 divisors (see below), whose sum is σ = 18076539360. Its totient is φ = 4820410488.

The previous prime is 9640820941. The next prime is 9640821007. The reversal of 9640820984 is 4890280469.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602551304 + ... + 602551319.

It is an arithmetic number, because the mean of its divisors is an integer number (2259567420).

Almost surely, 2^9640820984 is an apocalyptic number.

It is an amenable number.

9640820984 is a deficient number, since it is larger than the sum of its proper divisors (8435718376).

9640820984 is a wasteful number, since it uses less digits than its factorization.

9640820984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205102629 (or 1205102625 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 9640820984 is about 98187.6824454066. The cubic root of 9640820984 is about 2128.3252931170.

The spelling of 9640820984 in words is "nine billion, six hundred forty million, eight hundred twenty thousand, nine hundred eighty-four".