990179 has 2 divisors, whose sum is σ = 990180. Its totient is φ = 990178.

The previous prime is 990169. The next prime is 990181. The reversal of 990179 is 971099.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (971099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990179 - 2⁴ = 990163 is a prime.

Together with 990181, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (990169) 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 as a sum of consecutive naturals, namely, 495089 + 495090.

It is an arithmetic number, because the mean of its divisors is an integer number (495090).

2⁹⁹⁰¹⁷⁹ is an apocalyptic number.

990179 is a deficient number, since it is larger than the sum of its proper divisors (1).

990179 is an equidigital number, since it uses as much as digits as its factorization.

990179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 990179 is about 995.0773839255. The cubic root of 990179 is about 99.6715557582.

The spelling of 990179 in words is "nine hundred ninety thousand, one hundred seventy-nine".