9890964644 has 12 divisors (see below), whose sum is σ = 18882750768. Its totient is φ = 4495893000.

The previous prime is 9890964607. The next prime is 9890964673. The reversal of 9890964644 is 4464690989.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112397282 + ... + 112397369.

It is an arithmetic number, because the mean of its divisors is an integer number (1573562564).

Almost surely, 2^9890964644 is an apocalyptic number.

It is an amenable number.

9890964644 is a deficient number, since it is larger than the sum of its proper divisors (8991786124).

9890964644 is a wasteful number, since it uses less digits than its factorization.

9890964644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224794666 (or 224794664 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 59.

The square root of 9890964644 is about 99453.3289739464. The cubic root of 9890964644 is about 2146.5757385432.

The spelling of 9890964644 in words is "nine billion, eight hundred ninety million, nine hundred sixty-four thousand, six hundred forty-four".