83499989879393 has 2 divisors, whose sum is σ = 83499989879394. Its totient is φ = 83499989879392.

The previous prime is 83499989879381. The next prime is 83499989879407. The reversal of 83499989879393 is 39397898999438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81412146945424 + 2087842933969 = 9022868^2 + 1444937^2 .

It is a cyclic number.

It is not a de Polignac number, because 83499989879393 - 2⁴ = 83499989879377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83499989879393.

It is not a weakly prime, because it can be changed into another prime (83499989879323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41749994939696 + 41749994939697.

It is an arithmetic number, because the mean of its divisors is an integer number (41749994939697).

Almost surely, 2^{83499989879393} is an apocalyptic number.

It is an amenable number.

83499989879393 is a deficient number, since it is larger than the sum of its proper divisors (1).

83499989879393 is an equidigital number, since it uses as much as digits as its factorization.

83499989879393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205705930752, while the sum is 98.

The spelling of 83499989879393 in words is "eighty-three trillion, four hundred ninety-nine billion, nine hundred eighty-nine million, eight hundred seventy-nine thousand, three hundred ninety-three".