994216229 has 2 divisors, whose sum is σ = 994216230. Its totient is φ = 994216228.

The previous prime is 994216187. The next prime is 994216243. The reversal of 994216229 is 922612499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 954501025 + 39715204 = 30895^2 + 6302^2 .

It is a cyclic number.

It is not a de Polignac number, because 994216229 - 2²⁴ = 977439013 is a prime.

It is a super-3 number, since 3×994216229³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 994216229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994216129) 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, 497108114 + 497108115.

It is an arithmetic number, because the mean of its divisors is an integer number (497108115).

Almost surely, 2^994216229 is an apocalyptic number.

It is an amenable number.

994216229 is a deficient number, since it is larger than the sum of its proper divisors (1).

994216229 is an equidigital number, since it uses as much as digits as its factorization.

994216229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 994216229 is about 31531.1945381078. The cubic root of 994216229 is about 998.0683474543.

The spelling of 994216229 in words is "nine hundred ninety-four million, two hundred sixteen thousand, two hundred twenty-nine".