8217434377 has 4 divisors (see below), whose sum is σ = 8439527236. Its totient is φ = 7995341520.

The previous prime is 8217434369. The next prime is 8217434473. The reversal of 8217434377 is 7734347128.

8217434377 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3748378176 + 4469056201 = 61224^2 + 66851^2 .

It is a cyclic number.

It is not a de Polignac number, because 8217434377 - 2³ = 8217434369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8217434677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111046374 + ... + 111046447.

It is an arithmetic number, because the mean of its divisors is an integer number (2109881809).

Almost surely, 2^8217434377 is an apocalyptic number.

It is an amenable number.

8217434377 is a deficient number, since it is larger than the sum of its proper divisors (222092859).

8217434377 is a wasteful number, since it uses less digits than its factorization.

8217434377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222092858.

The product of its digits is 790272, while the sum is 46.

The square root of 8217434377 is about 90650.0655101804. The cubic root of 8217434377 is about 2017.9578074029.

The spelling of 8217434377 in words is "eight billion, two hundred seventeen million, four hundred thirty-four thousand, three hundred seventy-seven".