784748213 has 2 divisors, whose sum is σ = 784748214. Its totient is φ = 784748212.

The previous prime is 784748189. The next prime is 784748221. The reversal of 784748213 is 312847487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555922084 + 228826129 = 23578^2 + 15127^2 .

It is an emirp because it is prime and its reverse (312847487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 784748213 - 2²² = 780553909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (784748243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392374106 + 392374107.

It is an arithmetic number, because the mean of its divisors is an integer number (392374107).

Almost surely, 2^784748213 is an apocalyptic number.

It is an amenable number.

784748213 is a deficient number, since it is larger than the sum of its proper divisors (1).

784748213 is an equidigital number, since it uses as much as digits as its factorization.

784748213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 44.

The square root of 784748213 is about 28013.3577601829. The cubic root of 784748213 is about 922.3804974912.

The spelling of 784748213 in words is "seven hundred eighty-four million, seven hundred forty-eight thousand, two hundred thirteen".