8397806479 has 2 divisors, whose sum is σ = 8397806480. Its totient is φ = 8397806478.

The previous prime is 8397806419. The next prime is 8397806513. The reversal of 8397806479 is 9746087938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8397806479 - 2⁹ = 8397805967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8397806419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4198903239 + 4198903240.

It is an arithmetic number, because the mean of its divisors is an integer number (4198903240).

Almost surely, 2^8397806479 is an apocalyptic number.

8397806479 is a deficient number, since it is larger than the sum of its proper divisors (1).

8397806479 is an equidigital number, since it uses as much as digits as its factorization.

8397806479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The square root of 8397806479 is about 91639.5464796722. The cubic root of 8397806479 is about 2032.6157548324.

The spelling of 8397806479 in words is "eight billion, three hundred ninety-seven million, eight hundred six thousand, four hundred seventy-nine".