990259 has 2 divisors, whose sum is σ = 990260. Its totient is φ = 990258.

The previous prime is 990239. The next prime is 990277. The reversal of 990259 is 952099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 990259 - 2¹³ = 982067 is a prime.

It is a super-2 number, since 2×990259² = 1961225774162, which contains 22 as substring.

990259 is a lucky number.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (990239) 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, 495129 + 495130.

It is an arithmetic number, because the mean of its divisors is an integer number (495130).

2⁹⁹⁰²⁵⁹ is an apocalyptic number.

990259 is a deficient number, since it is larger than the sum of its proper divisors (1).

990259 is an equidigital number, since it uses as much as digits as its factorization.

990259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 990259 is about 995.1175809923. The cubic root of 990259 is about 99.6742399563.

The spelling of 990259 in words is "nine hundred ninety thousand, two hundred fifty-nine".