999905029 has 2 divisors, whose sum is σ = 999905030. Its totient is φ = 999905028.

The previous prime is 999904993. The next prime is 999905033. The reversal of 999905029 is 920509999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903904225 + 96000804 = 30065^2 + 9798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999905029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999905729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499952514 + 499952515.

It is an arithmetic number, because the mean of its divisors is an integer number (499952515).

Almost surely, 2^999905029 is an apocalyptic number.

It is an amenable number.

999905029 is a deficient number, since it is larger than the sum of its proper divisors (1).

999905029 is an equidigital number, since it uses as much as digits as its factorization.

999905029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 590490, while the sum is 52.

The square root of 999905029 is about 31621.2749426711. The cubic root of 999905029 is about 999.9683419978.

The spelling of 999905029 in words is "nine hundred ninety-nine million, nine hundred five thousand, twenty-nine".