990448 has 20 divisors (see below), whose sum is σ = 1940848. Its totient is φ = 489600.

The previous prime is 990397. The next prime is 990463. The reversal of 990448 is 844099.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

990448 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348 + ... + 1948.

2⁹⁹⁰⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

990448 is a deficient number, since it is larger than the sum of its proper divisors (950400).

990448 is a wasteful number, since it uses less digits than its factorization.

990448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 990448 is about 995.2125401139. The cubic root of 990448 is about 99.6805808001.

The spelling of 990448 in words is "nine hundred ninety thousand, four hundred forty-eight".