999960229 has 2 divisors, whose sum is σ = 999960230. Its totient is φ = 999960228.

The previous prime is 999960163. The next prime is 999960233. The reversal of 999960229 is 922069999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 931897729 + 68062500 = 30527^2 + 8250^2 .

It is a cyclic number.

It is not a de Polignac number, because 999960229 - 2¹¹ = 999958181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999960229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999960239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499980114 + 499980115.

It is an arithmetic number, because the mean of its divisors is an integer number (499980115).

Almost surely, 2^999960229 is an apocalyptic number.

It is an amenable number.

999960229 is a deficient number, since it is larger than the sum of its proper divisors (1).

999960229 is an equidigital number, since it uses as much as digits as its factorization.

999960229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1417176, while the sum is 55.

The square root of 999960229 is about 31622.1477607072. The cubic root of 999960229 is about 999.9867428242.

The spelling of 999960229 in words is "nine hundred ninety-nine million, nine hundred sixty thousand, two hundred twenty-nine".