999133 has 2 divisors, whose sum is σ = 999134. Its totient is φ = 999132.

The previous prime is 999101. The next prime is 999149. The reversal of 999133 is 331999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974169 + 24964 = 987^2 + 158^2 .

It is an emirp because it is prime and its reverse (331999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999133 - 2⁵ = 999101 is a prime.

999133 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499566 + 499567.

It is an arithmetic number, because the mean of its divisors is an integer number (499567).

2⁹⁹⁹¹³³ is an apocalyptic number.

It is an amenable number.

999133 is a deficient number, since it is larger than the sum of its proper divisors (1).

999133 is an equidigital number, since it uses as much as digits as its factorization.

999133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6561, while the sum is 34.

The square root of 999133 is about 999.5664059981. The cubic root of 999133 is about 99.9710916439.

The spelling of 999133 in words is "nine hundred ninety-nine thousand, one hundred thirty-three".