9891608 has 16 divisors (see below), whose sum is σ = 18771480. Its totient is φ = 4885888.

The previous prime is 9891601. The next prime is 9891613. The reversal of 9891608 is 8061989.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9891601) by changing a digit.

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, 6785 + ... + 8112.

Almost surely, 2^9891608 is an apocalyptic number.

It is an amenable number.

9891608 is a deficient number, since it is larger than the sum of its proper divisors (8879872).

9891608 is a wasteful number, since it uses less digits than its factorization.

9891608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14986 (or 14982 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 9891608 is about 3145.0926854387. The cubic root of 9891608 is about 214.6622278744.

The spelling of 9891608 in words is "nine million, eight hundred ninety-one thousand, six hundred eight".