992023217 has 2 divisors, whose sum is σ = 992023218. Its totient is φ = 992023216.

The previous prime is 992023199. The next prime is 992023223. The reversal of 992023217 is 712320299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 899940001 + 92083216 = 29999^2 + 9596^2 .

It is an emirp because it is prime and its reverse (712320299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 992023217 - 2⁸ = 992022961 is a prime.

It is a super-2 number, since 2×992023217² = 1968220126134058178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (992023267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496011608 + 496011609.

It is an arithmetic number, because the mean of its divisors is an integer number (496011609).

Almost surely, 2^992023217 is an apocalyptic number.

It is an amenable number.

992023217 is a deficient number, since it is larger than the sum of its proper divisors (1).

992023217 is an equidigital number, since it uses as much as digits as its factorization.

992023217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 992023217 is about 31496.4000641343. The cubic root of 992023217 is about 997.3339709388. Note that the first 3 decimals are identical.

The spelling of 992023217 in words is "nine hundred ninety-two million, twenty-three thousand, two hundred seventeen".