994393217 has 2 divisors, whose sum is σ = 994393218. Its totient is φ = 994393216.

The previous prime is 994393033. The next prime is 994393229. The reversal of 994393217 is 712393499.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971506561 + 22886656 = 31169^2 + 4784^2 .

It is a cyclic number.

It is not a de Polignac number, because 994393217 - 2¹⁴ = 994376833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (994393237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497196608 + 497196609.

It is an arithmetic number, because the mean of its divisors is an integer number (497196609).

Almost surely, 2^994393217 is an apocalyptic number.

It is an amenable number.

994393217 is a deficient number, since it is larger than the sum of its proper divisors (1).

994393217 is an equidigital number, since it uses as much as digits as its factorization.

994393217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 47.

The square root of 994393217 is about 31534.0009672100. Note that the first 3 decimals coincide. The cubic root of 994393217 is about 998.1275685219.

The spelling of 994393217 in words is "nine hundred ninety-four million, three hundred ninety-three thousand, two hundred seventeen".