990206323 has 8 divisors (see below), whose sum is σ = 1000913760. Its totient is φ = 979516800.

The previous prime is 990206317. The next prime is 990206353. The reversal of 990206323 is 323602099.

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-990206323 is a prime.

It is a super-3 number, since 3×990206323³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990206353) 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, 127218 + ... + 134776.

It is an arithmetic number, because the mean of its divisors is an integer number (125114220).

Almost surely, 2^990206323 is an apocalyptic number.

990206323 is a deficient number, since it is larger than the sum of its proper divisors (10707437).

990206323 is a wasteful number, since it uses less digits than its factorization.

990206323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 990206323 is about 31467.5439619936. The cubic root of 990206323 is about 996.7247252873.

The spelling of 990206323 in words is "nine hundred ninety million, two hundred six thousand, three hundred twenty-three".