999122263 has 2 divisors, whose sum is σ = 999122264. Its totient is φ = 999122262.

The previous prime is 999122177. The next prime is 999122269. The reversal of 999122263 is 362221999.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (362221999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999122263 - 2⁹ = 999121751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999122269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499561131 + 499561132.

It is an arithmetic number, because the mean of its divisors is an integer number (499561132).

Almost surely, 2^999122263 is an apocalyptic number.

999122263 is a deficient number, since it is larger than the sum of its proper divisors (1).

999122263 is an equidigital number, since it uses as much as digits as its factorization.

999122263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 43.

The square root of 999122263 is about 31608.8953144522. The cubic root of 999122263 is about 999.7073353558.

The spelling of 999122263 in words is "nine hundred ninety-nine million, one hundred twenty-two thousand, two hundred sixty-three".