8434346845 has 4 divisors (see below), whose sum is σ = 10121216220. Its totient is φ = 6747477472.

The previous prime is 8434346831. The next prime is 8434346873. The reversal of 8434346845 is 5486434348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4694168196 + 3740178649 = 68514^2 + 61157^2 .

It is a cyclic number.

It is not a de Polignac number, because 8434346845 - 2³¹ = 6286863197 is a prime.

It is a super-2 number, since 2×8434346845² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 843434680 + ... + 843434689.

It is an arithmetic number, because the mean of its divisors is an integer number (2530304055).

Almost surely, 2^8434346845 is an apocalyptic number.

It is an amenable number.

8434346845 is a deficient number, since it is larger than the sum of its proper divisors (1686869375).

8434346845 is a wasteful number, since it uses less digits than its factorization.

8434346845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686869374.

The product of its digits is 4423680, while the sum is 49.

The square root of 8434346845 is about 91838.7001486846. The cubic root of 8434346845 is about 2035.5595814570.

The spelling of 8434346845 in words is "eight billion, four hundred thirty-four million, three hundred forty-six thousand, eight hundred forty-five".