8445665417 has 4 divisors (see below), whose sum is σ = 9652189056. Its totient is φ = 7239141780.

The previous prime is 8445665411. The next prime is 8445665419. The reversal of 8445665417 is 7145665448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8445665417 - 2⁴ = 8445665401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8445665411) 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, 603261809 + ... + 603261822.

It is an arithmetic number, because the mean of its divisors is an integer number (2413047264).

Almost surely, 2^8445665417 is an apocalyptic number.

It is an amenable number.

8445665417 is a deficient number, since it is larger than the sum of its proper divisors (1206523639).

8445665417 is a wasteful number, since it uses less digits than its factorization.

8445665417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206523638.

The product of its digits is 3225600, while the sum is 50.

The square root of 8445665417 is about 91900.3015065783. The cubic root of 8445665417 is about 2036.4697222453.

The spelling of 8445665417 in words is "eight billion, four hundred forty-five million, six hundred sixty-five thousand, four hundred seventeen".