8434648897 has 4 divisors (see below), whose sum is σ = 8447108436. Its totient is φ = 8422189360.

The previous prime is 8434648823. The next prime is 8434648921. The reversal of 8434648897 is 7988464348.

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 4857532416 + 3577116481 = 69696^2 + 59809^2 .

It is a cyclic number.

It is not a de Polignac number, because 8434648897 - 2³¹ = 6287165249 is a prime.

It is a super-2 number, since 2×8434648897² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8434648097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6228754 + ... + 6230107.

It is an arithmetic number, because the mean of its divisors is an integer number (2111777109).

Almost surely, 2^8434648897 is an apocalyptic number.

It is an amenable number.

8434648897 is a deficient number, since it is larger than the sum of its proper divisors (12459539).

8434648897 is a wasteful number, since it uses less digits than its factorization.

8434648897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12459538.

The product of its digits is 37158912, while the sum is 61.

The square root of 8434648897 is about 91840.3446041009. The cubic root of 8434648897 is about 2035.5838804143.

The spelling of 8434648897 in words is "eight billion, four hundred thirty-four million, six hundred forty-eight thousand, eight hundred ninety-seven".