9786990 has 32 divisors (see below), whose sum is σ = 23667840. Its totient is φ = 2589984.

The previous prime is 9786977. The next prime is 9786991. The reversal of 9786990 is 996879.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9786991) 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 15 ways as a sum of consecutive naturals, for example, 2997 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (739620).

Almost surely, 2^9786990 is an apocalyptic number.

9786990 is an abundant number, since it is smaller than the sum of its proper divisors (13880850).

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

9786990 is a wasteful number, since it uses less digits than its factorization.

9786990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 9786990 is about 3128.4165323691. The cubic root of 9786990 is about 213.9027566454.

The spelling of 9786990 in words is "nine million, seven hundred eighty-six thousand, nine hundred ninety".