816384479 has 2 divisors, whose sum is σ = 816384480. Its totient is φ = 816384478.

The previous prime is 816384469. The next prime is 816384511. The reversal of 816384479 is 974483618.

816384479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 816384479 - 2⁸ = 816384223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816384409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408192239 + 408192240.

It is an arithmetic number, because the mean of its divisors is an integer number (408192240).

Almost surely, 2^816384479 is an apocalyptic number.

816384479 is a deficient number, since it is larger than the sum of its proper divisors (1).

816384479 is an equidigital number, since it uses as much as digits as its factorization.

816384479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 816384479 is about 28572.4426502181. The cubic root of 816384479 is about 934.6124883352.

The spelling of 816384479 in words is "eight hundred sixteen million, three hundred eighty-four thousand, four hundred seventy-nine".