9890636 has 12 divisors (see below), whose sum is σ = 19781328. Its totient is φ = 4238832.

The previous prime is 9890623. The next prime is 9890663. The reversal of 9890636 is 6360989.

9890636 is an admirable number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9890593 and 9890602.

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, 176591 + ... + 176646.

It is an arithmetic number, because the mean of its divisors is an integer number (1648444).

Almost surely, 2^9890636 is an apocalyptic number.

It is an amenable number.

9890636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9890636 is a wasteful number, since it uses less digits than its factorization.

9890636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353248 (or 353246 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 9890636 is about 3144.9381551948. The cubic root of 9890636 is about 214.6551963745.

The spelling of 9890636 in words is "nine million, eight hundred ninety thousand, six hundred thirty-six".