9945786 has 8 divisors (see below), whose sum is σ = 19891584. Its totient is φ = 3315260.

The previous prime is 9945781. The next prime is 9945841. The reversal of 9945786 is 6875499.

It is a sphenic number, since it is the product of 3 distinct primes.

9945786 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (9945781) 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, 828810 + ... + 828821.

It is an arithmetic number, because the mean of its divisors is an integer number (2486448).

Almost surely, 2^9945786 is an apocalyptic number.

9945786 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.

9945786 is a wasteful number, since it uses less digits than its factorization.

9945786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657636.

The product of its digits is 544320, while the sum is 48.

The square root of 9945786 is about 3153.6940244735. The cubic root of 9945786 is about 215.0534282217.

It can be divided in two parts, 9945 and 786, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 9945786 in words is "nine million, nine hundred forty-five thousand, seven hundred eighty-six".