990446 has 8 divisors (see below), whose sum is σ = 1492344. Its totient is φ = 493000.

The previous prime is 990397. The next prime is 990463. The reversal of 990446 is 644099.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

990446 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (186543).

2⁹⁹⁰⁴⁴⁶ is an apocalyptic number.

990446 is a deficient number, since it is larger than the sum of its proper divisors (501898).

990446 is a wasteful number, since it uses less digits than its factorization.

990446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 990446 is about 995.2115353029. The cubic root of 990446 is about 99.6805137054.

The spelling of 990446 in words is "nine hundred ninety thousand, four hundred forty-six".