9494209 has 2 divisors, whose sum is σ = 9494210. Its totient is φ = 9494208.

The previous prime is 9494207. The next prime is 9494257. The reversal of 9494209 is 9024949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 494209 = 3000^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 9494209 - 2¹ = 9494207 is a prime.

Together with 9494207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9494201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4747104 + 4747105.

It is an arithmetic number, because the mean of its divisors is an integer number (4747105).

Almost surely, 2^9494209 is an apocalyptic number.

It is an amenable number.

9494209 is a deficient number, since it is larger than the sum of its proper divisors (1).

9494209 is an equidigital number, since it uses as much as digits as its factorization.

9494209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 9494209 is about 3081.2674340278. The cubic root of 9494209 is about 211.7481359841.

It can be divided in two parts, 9 and 494209, that multiplied together give a square (4447881 = 2109²).

The spelling of 9494209 in words is "nine million, four hundred ninety-four thousand, two hundred nine".