9989946 has 16 divisors (see below), whose sum is σ = 22200000. Its totient is φ = 3329964.

The previous prime is 9989927. The next prime is 9989957. The reversal of 9989946 is 6499899.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 184999 = 9989946 / (9 + 9 + 8 + 9 + 9 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 9989892 and 9989901.

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 7 ways as a sum of consecutive naturals, for example, 92446 + ... + 92553.

It is an arithmetic number, because the mean of its divisors is an integer number (1387500).

Almost surely, 2^9989946 is an apocalyptic number.

9989946 is an abundant number, since it is smaller than the sum of its proper divisors (12210054).

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

9989946 is a wasteful number, since it uses less digits than its factorization.

9989946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185010 (or 185004 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 9989946 is about 3160.6875834223. The cubic root of 9989946 is about 215.3712425044.

The spelling of 9989946 in words is "nine million, nine hundred eighty-nine thousand, nine hundred forty-six".