847380913 has 2 divisors, whose sum is σ = 847380914. Its totient is φ = 847380912.

The previous prime is 847380893. The next prime is 847380923. The reversal of 847380913 is 319083748.

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., 817273744 + 30107169 = 28588^2 + 5487^2 .

It is a cyclic number.

It is not a de Polignac number, because 847380913 - 2¹⁷ = 847249841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 847380913.

It is not a weakly prime, because it can be changed into another prime (847380923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423690456 + 423690457.

It is an arithmetic number, because the mean of its divisors is an integer number (423690457).

Almost surely, 2^847380913 is an apocalyptic number.

It is an amenable number.

847380913 is a deficient number, since it is larger than the sum of its proper divisors (1).

847380913 is an equidigital number, since it uses as much as digits as its factorization.

847380913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 847380913 is about 29109.8078489021. The cubic root of 847380913 is about 946.2943036598.

The spelling of 847380913 in words is "eight hundred forty-seven million, three hundred eighty thousand, nine hundred thirteen".