999002281 has 2 divisors, whose sum is σ = 999002282. Its totient is φ = 999002280.

The previous prime is 999002239. The next prime is 999002341. The reversal of 999002281 is 182200999.

999002281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 957283600 + 41718681 = 30940^2 + 6459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999002281 is a prime.

It is a super-2 number, since 2×999002281² = 1996011114886405922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999002231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499501140 + 499501141.

It is an arithmetic number, because the mean of its divisors is an integer number (499501141).

Almost surely, 2^999002281 is an apocalyptic number.

It is an amenable number.

999002281 is a deficient number, since it is larger than the sum of its proper divisors (1).

999002281 is an equidigital number, since it uses as much as digits as its factorization.

999002281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 999002281 is about 31606.9973423608. The cubic root of 999002281 is about 999.6673163339.

The spelling of 999002281 in words is "nine hundred ninety-nine million, two thousand, two hundred eighty-one".