999043 has 2 divisors, whose sum is σ = 999044. Its totient is φ = 999042.

The previous prime is 999029. The next prime is 999049. The reversal of 999043 is 340999.

It is a strong prime.

It is an emirp because it is prime and its reverse (340999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999043 - 2¹³ = 990851 is a prime.

It is not a weakly prime, because it can be changed into another prime (999049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499521 + 499522.

It is an arithmetic number, because the mean of its divisors is an integer number (499522).

2⁹⁹⁹⁰⁴³ is an apocalyptic number.

999043 is a deficient number, since it is larger than the sum of its proper divisors (1).

999043 is an equidigital number, since it uses as much as digits as its factorization.

999043 is an evil number, because the sum of its binary digits is even.

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

The square root of 999043 is about 999.5213854641. The cubic root of 999043 is about 99.9680898185.

The spelling of 999043 in words is "nine hundred ninety-nine thousand, forty-three".