8999011646 has 4 divisors (see below), whose sum is σ = 13498517472. Its totient is φ = 4499505822.

The previous prime is 8999011633. The next prime is 8999011673. The reversal of 8999011646 is 6461109998.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2249752910 + ... + 2249752913.

It is an arithmetic number, because the mean of its divisors is an integer number (3374629368).

Almost surely, 2^8999011646 is an apocalyptic number.

8999011646 is a deficient number, since it is larger than the sum of its proper divisors (4499505826).

8999011646 is a wasteful number, since it uses less digits than its factorization.

8999011646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499505825.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 8999011646 is about 94863.1205790744. The cubic root of 8999011646 is about 2080.0076773324.

The spelling of 8999011646 in words is "eight billion, nine hundred ninety-nine million, eleven thousand, six hundred forty-six".