999242207 has 2 divisors, whose sum is σ = 999242208. Its totient is φ = 999242206.

The previous prime is 999242191. The next prime is 999242263. The reversal of 999242207 is 702242999.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (702242999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999242207 - 2⁴ = 999242191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999242267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499621103 + 499621104.

It is an arithmetic number, because the mean of its divisors is an integer number (499621104).

Almost surely, 2^999242207 is an apocalyptic number.

999242207 is a deficient number, since it is larger than the sum of its proper divisors (1).

999242207 is an equidigital number, since it uses as much as digits as its factorization.

999242207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 999242207 is about 31610.7925715253. The cubic root of 999242207 is about 999.7473385009.

The spelling of 999242207 in words is "nine hundred ninety-nine million, two hundred forty-two thousand, two hundred seven".