8669394479 has 2 divisors, whose sum is σ = 8669394480. Its totient is φ = 8669394478.

The previous prime is 8669394427. The next prime is 8669394491. The reversal of 8669394479 is 9744939668.

It is a happy number.

8669394479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8669394479 - 2²⁴ = 8652617263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8669394379) 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, 4334697239 + 4334697240.

It is an arithmetic number, because the mean of its divisors is an integer number (4334697240).

Almost surely, 2^8669394479 is an apocalyptic number.

8669394479 is a deficient number, since it is larger than the sum of its proper divisors (1).

8669394479 is an equidigital number, since it uses as much as digits as its factorization.

8669394479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70543872, while the sum is 65.

The square root of 8669394479 is about 93109.5831748806. The cubic root of 8669394479 is about 2054.2955322164.

The spelling of 8669394479 in words is "eight billion, six hundred sixty-nine million, three hundred ninety-four thousand, four hundred seventy-nine".