84469599869 has 2 divisors, whose sum is σ = 84469599870. Its totient is φ = 84469599868.

The previous prime is 84469599833. The next prime is 84469599917. The reversal of 84469599869 is 96899596448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79997334244 + 4472265625 = 282838^2 + 66875^2 .

It is a cyclic number.

It is not a de Polignac number, because 84469599869 - 2²⁴ = 84452822653 is a prime.

It is a super-2 number, since 2×84469599869² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84469599869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84469592869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42234799934 + 42234799935.

It is an arithmetic number, because the mean of its divisors is an integer number (42234799935).

Almost surely, 2^84469599869 is an apocalyptic number.

It is an amenable number.

84469599869 is a deficient number, since it is larger than the sum of its proper divisors (1).

84469599869 is an equidigital number, since it uses as much as digits as its factorization.

84469599869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209323520, while the sum is 77.

The spelling of 84469599869 in words is "eighty-four billion, four hundred sixty-nine million, five hundred ninety-nine thousand, eight hundred sixty-nine".