9990213 has 8 divisors (see below), whose sum is σ = 13452576. Its totient is φ = 6594000.

The previous prime is 9990209. The next prime is 9990221. The reversal of 9990213 is 3120999.

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

It is not a de Polignac number, because 9990213 - 2² = 9990209 is a prime.

It is a Curzon number.

9990213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16183 + ... + 16788.

It is an arithmetic number, because the mean of its divisors is an integer number (1681572).

Almost surely, 2^9990213 is an apocalyptic number.

It is an amenable number.

9990213 is a deficient number, since it is larger than the sum of its proper divisors (3462363).

9990213 is a wasteful number, since it uses less digits than its factorization.

9990213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33075.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 9990213 is about 3160.7298207851. The cubic root of 9990213 is about 215.3731612204.

The spelling of 9990213 in words is "nine million, nine hundred ninety thousand, two hundred thirteen".