990220303 has 8 divisors (see below), whose sum is σ = 1000842480. Its totient is φ = 979655040.

The previous prime is 990220291. The next prime is 990220313. The reversal of 990220303 is 303022099.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990220303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990220313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21223 + ... + 49303.

It is an arithmetic number, because the mean of its divisors is an integer number (125105310).

Almost surely, 2^990220303 is an apocalyptic number.

990220303 is a deficient number, since it is larger than the sum of its proper divisors (10622177).

990220303 is a wasteful number, since it uses less digits than its factorization.

990220303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28457.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 990220303 is about 31467.7660948470. The cubic root of 990220303 is about 996.7294159414.

The spelling of 990220303 in words is "nine hundred ninety million, two hundred twenty thousand, three hundred three".