9990544 has 20 divisors (see below), whose sum is σ = 19592496. Its totient is φ = 4934432.

The previous prime is 9990499. The next prime is 9990551. The reversal of 9990544 is 4450999.

It is a junction number, because it is equal to n+sod(n) for n = 9990497 and 9990506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2434 + ... + 5089.

Almost surely, 2^9990544 is an apocalyptic number.

It is an amenable number.

9990544 is a deficient number, since it is larger than the sum of its proper divisors (9601952).

9990544 is a wasteful number, since it uses less digits than its factorization.

9990544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7614 (or 7608 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 9990544 is about 3160.7821816759. The cubic root of 9990544 is about 215.3755398060.

The spelling of 9990544 in words is "nine million, nine hundred ninety thousand, five hundred forty-four".