994737217 has 2 divisors, whose sum is σ = 994737218. Its totient is φ = 994737216.

The previous prime is 994737199. The next prime is 994737221. The reversal of 994737217 is 712737499.

994737217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 928786576 + 65950641 = 30476^2 + 8121^2 .

It is an emirp because it is prime and its reverse (712737499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994737217 - 2²⁷ = 860519489 is a prime.

It is not a weakly prime, because it can be changed into another prime (994737277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497368608 + 497368609.

It is an arithmetic number, because the mean of its divisors is an integer number (497368609).

Almost surely, 2^994737217 is an apocalyptic number.

It is an amenable number.

994737217 is a deficient number, since it is larger than the sum of its proper divisors (1).

994737217 is an equidigital number, since it uses as much as digits as its factorization.

994737217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 49.

The square root of 994737217 is about 31539.4549255373. The cubic root of 994737217 is about 998.2426525390.

The spelling of 994737217 in words is "nine hundred ninety-four million, seven hundred thirty-seven thousand, two hundred seventeen".