8421860353 has 2 divisors, whose sum is σ = 8421860354. Its totient is φ = 8421860352.

The previous prime is 8421860311. The next prime is 8421860357. The reversal of 8421860353 is 3530681248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7931149249 + 490711104 = 89057^2 + 22152^2 .

It is a cyclic number.

It is not a de Polignac number, because 8421860353 - 2⁹ = 8421859841 is a prime.

It is not a weakly prime, because it can be changed into another prime (8421860357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4210930176 + 4210930177.

It is an arithmetic number, because the mean of its divisors is an integer number (4210930177).

Almost surely, 2^8421860353 is an apocalyptic number.

It is an amenable number.

8421860353 is a deficient number, since it is larger than the sum of its proper divisors (1).

8421860353 is an equidigital number, since it uses as much as digits as its factorization.

8421860353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 8421860353 is about 91770.6944127590. The cubic root of 8421860353 is about 2034.5545816251.

The spelling of 8421860353 in words is "eight billion, four hundred twenty-one million, eight hundred sixty thousand, three hundred fifty-three".