990349 has 2 divisors, whose sum is σ = 990350. Its totient is φ = 990348.

The previous prime is 990331. The next prime is 990359. The reversal of 990349 is 943099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 990025 + 324 = 995^2 + 18^2 .

It is a cyclic number.

It is not a de Polignac number, because 990349 - 2⁹ = 989837 is a prime.

It is a super-2 number, since 2×990349² = 1961582283602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495174 + 495175.

It is an arithmetic number, because the mean of its divisors is an integer number (495175).

2⁹⁹⁰³⁴⁹ is an apocalyptic number.

It is an amenable number.

990349 is a deficient number, since it is larger than the sum of its proper divisors (1).

990349 is an equidigital number, since it uses as much as digits as its factorization.

990349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 990349 is about 995.1628007517. The cubic root of 990349 is about 99.6772595063.

The spelling of 990349 in words is "nine hundred ninety thousand, three hundred forty-nine".