8479213693 has 2 divisors, whose sum is σ = 8479213694. Its totient is φ = 8479213692.

The previous prime is 8479213681. The next prime is 8479213697. The reversal of 8479213693 is 3963129748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6390083844 + 2089129849 = 79938^2 + 45707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8479213693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8479213693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8479213697) 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, 4239606846 + 4239606847.

It is an arithmetic number, because the mean of its divisors is an integer number (4239606847).

Almost surely, 2^8479213693 is an apocalyptic number.

It is an amenable number.

8479213693 is a deficient number, since it is larger than the sum of its proper divisors (1).

8479213693 is an equidigital number, since it uses as much as digits as its factorization.

8479213693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The square root of 8479213693 is about 92082.6459926082. The cubic root of 8479213693 is about 2039.1626139104.

The spelling of 8479213693 in words is "eight billion, four hundred seventy-nine million, two hundred thirteen thousand, six hundred ninety-three".