999973229 has 2 divisors, whose sum is σ = 999973230. Its totient is φ = 999973228.

The previous prime is 999973223. The next prime is 999973253. The reversal of 999973229 is 922379999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 691795204 + 308178025 = 26302^2 + 17555^2 .

It is a cyclic number.

It is not a de Polignac number, because 999973229 - 2²⁰ = 998924653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999973223) 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, 499986614 + 499986615.

It is an arithmetic number, because the mean of its divisors is an integer number (499986615).

Almost surely, 2^999973229 is an apocalyptic number.

It is an amenable number.

999973229 is a deficient number, since it is larger than the sum of its proper divisors (1).

999973229 is an equidigital number, since it uses as much as digits as its factorization.

999973229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4960116, while the sum is 59.

The square root of 999973229 is about 31622.3533121746. The cubic root of 999973229 is about 999.9910762537.

The spelling of 999973229 in words is "nine hundred ninety-nine million, nine hundred seventy-three thousand, two hundred twenty-nine".