9986445 has 48 divisors (see below), whose sum is σ = 20217600. Its totient is φ = 4558176.

The previous prime is 9986443. The next prime is 9986467. The reversal of 9986445 is 5446899.

It is a happy number.

It is not a de Polignac number, because 9986445 - 2¹ = 9986443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 9986445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15112 + ... + 15758.

It is an arithmetic number, because the mean of its divisors is an integer number (421200).

Almost surely, 2^9986445 is an apocalyptic number.

It is an amenable number.

9986445 is an abundant number, since it is smaller than the sum of its proper divisors (10231155).

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

9986445 is a wasteful number, since it uses less digits than its factorization.

9986445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 662 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 9986445 is about 3160.1336997032. The cubic root of 9986445 is about 215.3460804458.

The spelling of 9986445 in words is "nine million, nine hundred eighty-six thousand, four hundred forty-five".