9944666 has 4 divisors (see below), whose sum is σ = 14917002. Its totient is φ = 4972332.

The previous prime is 9944663. The next prime is 9944681. The reversal of 9944666 is 6664499.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6664499 = 233 ⋅28603.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 2627641 = 2705^2 + 1621^2 .

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9944663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2486165 + ... + 2486168.

Almost surely, 2^9944666 is an apocalyptic number.

9944666 is a deficient number, since it is larger than the sum of its proper divisors (4972336).

9944666 is a wasteful number, since it uses less digits than its factorization.

9944666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972335.

The product of its digits is 279936, while the sum is 44.

The square root of 9944666 is about 3153.5164499333. The cubic root of 9944666 is about 215.0453554935.

The spelling of 9944666 in words is "nine million, nine hundred forty-four thousand, six hundred sixty-six".