8432406641 has 4 divisors (see below), whose sum is σ = 8433829092. Its totient is φ = 8430984192.

The previous prime is 8432406637. The next prime is 8432406659. The reversal of 8432406641 is 1466042348.

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 3744950416 + 4687456225 = 61196^2 + 68465^2 .

It is a cyclic number.

It is not a de Polignac number, because 8432406641 - 2² = 8432406637 is a prime.

It is a super-2 number, since 2×8432406641² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8432406595 and 8432406604.

It is not an unprimeable number, because it can be changed into a prime (8432406611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702296 + ... + 714201.

It is an arithmetic number, because the mean of its divisors is an integer number (2108457273).

Almost surely, 2^8432406641 is an apocalyptic number.

It is an amenable number.

8432406641 is a deficient number, since it is larger than the sum of its proper divisors (1422451).

8432406641 is a wasteful number, since it uses less digits than its factorization.

8432406641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422450.

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 8432406641 is about 91828.1364343195. The cubic root of 8432406641 is about 2035.4034854451.

Adding to 8432406641 its reverse (1466042348), we get a palindrome (9898448989).

The spelling of 8432406641 in words is "eight billion, four hundred thirty-two million, four hundred six thousand, six hundred forty-one".