9990244 has 18 divisors (see below), whose sum is σ = 19217702. Its totient is φ = 4540800.

The previous prime is 9990221. The next prime is 9990251. The reversal of 9990244 is 4420999.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 3020644 = 2640^2 + 1738^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9837 + ... + 10804.

Almost surely, 2^9990244 is an apocalyptic number.

It is an amenable number.

9990244 is a deficient number, since it is larger than the sum of its proper divisors (9227458).

9990244 is a wasteful number, since it uses less digits than its factorization.

9990244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20667 (or 20654 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 9990244 is about 3160.7347247120. The cubic root of 9990244 is about 215.3733839905.

The spelling of 9990244 in words is "nine million, nine hundred ninety thousand, two hundred forty-four".